Before medications are approved by the U.S. Food and Drug Administration (FDA) or before certain therapy methods are widely accepted as effective, they are tested on people who volunteer to participate in a clinical trial.

Organizations across the country are looking for people like you to take part in their research studies. The list of studies below have been selected from ClinicalTrials.gov based on their inclusion of one or more of the following terms: anxiety disorders, depression, OCD, PTSD, and bipolar disorder.

The Anxiety and Depression Association of America (ADAA) is supportive of research that is conducted through clinical trials. Participating in research can potentially help change the mental health outcomes for you and others who suffer anxiety, depression, and related disorders. You may learn about new interventions/treatments that are being considered.

Read this ADAA blog about things to know and questions to ask before committing to a clinical trial.

This website page is brought to you in partnership with ResearchMatch.


855 matching studies

Sponsor Condition of Interest
Testing a Lifestyle Physical Activity Intervention for Women With Depression in Alcohol Treatment
Butler Hospital Alcohol Use Disorder Depression
The primary aim of this project is to test the efficacy of a technology-supported lifestyle physical activity (LPA) intervention for preventing relapse among women with depression engaged in alcohol treatment. Participants are randomized to either 1) LPA+Fitbit intervention or 2) Fitbit Only contro1 expand

The primary aim of this project is to test the efficacy of a technology-supported lifestyle physical activity (LPA) intervention for preventing relapse among women with depression engaged in alcohol treatment. Participants are randomized to either 1) LPA+Fitbit intervention or 2) Fitbit Only control condition. Follow-up assessments and EMA data will be collected.

Type: Interventional

Start Date: May 2021

open study

Positive Processes and Transition to Health - Single-Session (PATH-SS)
Case Western Reserve University PTSD Depression
The goal of this clinical trial is to test a brief, new psychotherapy (called Positive Processes and Transition to Health - Single Session, or PATH-SS) that aims to provide relief for people who are suffering after experiencing a sexual assault. This research will explore whether this new psychothe1 expand

The goal of this clinical trial is to test a brief, new psychotherapy (called Positive Processes and Transition to Health - Single Session, or PATH-SS) that aims to provide relief for people who are suffering after experiencing a sexual assault. This research will explore whether this new psychotherapy reduces sexual assault related distress, including posttraumatic stress and depression symptoms. The main questions it aims to answer are: Does PATH-SS leads to improvements in PTSD and depression symptoms (pre- to post- and 1-month follow-up)? Do participants perceive PATH-SS to be acceptable, helpful, and do they complete/adhere to treatment? Participants will complete a pre-treatment/baseline assessment to confirm eligibility, and those who are eligible will receive the single-session intervention and will complete a post-treatment and a 1-month follow-up assessment of stressor-related symptoms.

Type: Interventional

Start Date: Mar 2025

open study

State-Funded Trial Assessing Recovery and Long-Term Impact of Guided Psilocybin for Healing Trauma
Baylor College of Medicine PTSD
The principal investigator for this study plans to build upon the psilocybin-assisted therapy intervention used in prior completed trials to conduct an open-label trial of two psilocybin administration sessions combined with psychotherapy to investigate the safety, tolerability, and clinical effica1 expand

The principal investigator for this study plans to build upon the psilocybin-assisted therapy intervention used in prior completed trials to conduct an open-label trial of two psilocybin administration sessions combined with psychotherapy to investigate the safety, tolerability, and clinical efficacy of psilocybin-assisted therapy for the treatment of PTSD in US Veterans.

Type: Interventional

Start Date: Jan 2025

open study

Study of ABX-002 for the Adjunctive Treatment of Depressive Episodes Associated With Bipolar Depres1
Autobahn Therapeutics, Inc. Bipolar Disorder Depression
The goal of this clinical trial is to learn if ABX-002 added to participants' existing treatment shows effects on brain chemistry that may relate to anti depressive effects This is a single treatment arm, open-label, Phase 2 study of ABX-002 in 30 adults with bipolar disorder and 5 healthy volunte1 expand

The goal of this clinical trial is to learn if ABX-002 added to participants' existing treatment shows effects on brain chemistry that may relate to anti depressive effects This is a single treatment arm, open-label, Phase 2 study of ABX-002 in 30 adults with bipolar disorder and 5 healthy volunteers. Healthy volunteer participants will receive no drug treatment and will undergo 2 imaging sessions to confirm instrument and test - retest method reliability control. For bipolar disorder participants with depression, the study will include 3 study periods: 1. Screening Period of up to 4 weeks 2. 6-week Treatment Period 3. 2-week post dose Safety Follow-up Period. For healthy volunteers, the study will include 2 study periods: 1. Screening Period of up to 3 weeks 2. Imaging Period of up to 3 weeks.

Type: Interventional

Start Date: Apr 2025

open study

Family Acceptance Project Online (Pilot RCT)
University of Michigan LGBTQ Racial Disparities Family Relationships Minority Stress Depression
Research shows that sexual and gender minority youth (SGMY) experience high rates of mental health problems and other challenges (e.g., social, academic). A major factor that leads to these challenges is family rejection (family behaviors and reactions that minimize, deny, ridicule and attempt to p1 expand

Research shows that sexual and gender minority youth (SGMY) experience high rates of mental health problems and other challenges (e.g., social, academic). A major factor that leads to these challenges is family rejection (family behaviors and reactions that minimize, deny, ridicule and attempt to prevent or change a child's sexual orientation, gender identity and gender expression). Racial and ethnic minority youth experience the highest rates of family rejection and related health risks. The Family Acceptance Project (FAP) is a research, education, and intervention initiative that was founded more than 20 years ago to help diverse families learn to support and affirm their SGMY. FAP's Family Support Model is grounded in the lived experiences of diverse SGMY and families and uses a culture-based family support framework that enables parents and caregivers to change rejecting behaviors that FAP's research has shown contribute to health risks and increase supportive and accepting behaviors that promote well-being for SGMY. The overall goal of this research project is to evaluate a nine-week online version of FAP's Family Support Model (FAP-O). The investigators will specifically study how FAP-O: 1. Promotes parent/caregiver acceptance and support of their sexual and gender minority youth. 2. Increases family bonding and communication. 3. Increases SGMYs' feelings of pride in being LGBTQ+ and more hopeful about the future. 4. Leads to reductions in mental health problems reported by SGMY who experience family rejection. Before receiving FAP-O's family support services, racial and ethnic minority SGMY (ages 14 to 20) and their caregivers will complete an initial pre-test survey. After completing this initial (baseline) survey, half of the families will participate in program sessions. Following the first round of sessions, all participants will complete an immediate follow-up survey, with an additional survey conducted six months after this. These surveys help us learn if FAP-O impacts the project's goals above. After the final survey, the other half of the families will attend program sessions. The investigators will also ask SGMY and caregivers to share what they liked about the program and their guidance for enhancing it.

Type: Interventional

Start Date: Apr 2025

open study

A Phase 3 Trial of MM120 for Generalized Anxiety Disorder (Panorama)
Mind Medicine, Inc. Generalized Anxiety Disorder
A Phase 3, Double-blind, Placebo-controlled Study (Part A) with an Open-label Extension (Part B) Evaluating MM120 Compared to Placebo in Generalized Anxiety Disorder - Panorama expand

A Phase 3, Double-blind, Placebo-controlled Study (Part A) with an Open-label Extension (Part B) Evaluating MM120 Compared to Placebo in Generalized Anxiety Disorder - Panorama

Type: Interventional

Start Date: Jan 2025

open study

Strengthening Health and Insight in New Educators
University of Alabama, Tuscaloosa Anxiety Symptoms Depressive Symptoms
Teachers are at notable risk for depression and anxiety. The present study tests an app-based mindfulness intervention for teachers in their final year of training with the goal of preventing the deterioration of their mental health during the transition into the classroom. The project will strengt1 expand

Teachers are at notable risk for depression and anxiety. The present study tests an app-based mindfulness intervention for teachers in their final year of training with the goal of preventing the deterioration of their mental health during the transition into the classroom. The project will strengthen the research environment at the University of Alabama and will involve undergraduate research assistants in each step of the research process.

Type: Interventional

Start Date: Jan 2025

open study

Light Therapy for Obsessive-compulsive Disorder (OCD)
Washington University School of Medicine OCD
The goal of this clinical trial is to test whether light therapy is effective for reducing symptoms in young adults with OCD and late bedtimes (1am or later). The main question[s] it aims to answer are: Does light therapy reduce OCD symptoms? Does light therapy advance the circadian clock? If ther1 expand

The goal of this clinical trial is to test whether light therapy is effective for reducing symptoms in young adults with OCD and late bedtimes (1am or later). The main question[s] it aims to answer are: Does light therapy reduce OCD symptoms? Does light therapy advance the circadian clock? If there is a comparison group: Researchers will compare a higher dose of light therapy to a lower dose to see if dose amount affects symptom reduction. Participants will asked to: 1. Wear light therapy glasses for 1 hour each morning and complete a daily light therapy log for 5 weeks 2. Track their sleep every day with a wearable monitor and an electronic sleep diary for 5 weeks 3. Complete a 1-time assessment of sensitivity to light exposure 4. Complete self-report measures of OCD 4 times/day at baseline (2 weeks), mid-treatment (1 week), and end of treatment (1 week)

Type: Interventional

Start Date: Dec 2024

open study

Mobile Cognitive Behavioral Therapy for Stroke
Weill Medical College of Cornell University Anxiety Stroke Depression
This study aims to assess the feasibility and acceptability of "MAYA", a mobile cognitive behavioral therapy app for anxiety and mood disorders, in adults who have had a stroke. expand

This study aims to assess the feasibility and acceptability of "MAYA", a mobile cognitive behavioral therapy app for anxiety and mood disorders, in adults who have had a stroke.

Type: Interventional

Start Date: Feb 2025

open study

Meditative Neurofeedback for Depression
University of California, San Diego Depression - Major Depressive Disorder Depression Disorders
The goal of this open-label single-arm study is to test a meditative neurofeedback intervention for depressed mood. expand

The goal of this open-label single-arm study is to test a meditative neurofeedback intervention for depressed mood.

Type: Interventional

Start Date: Nov 2024

open study

Multisite Virtual Reality Intervention for Speech Anxiety
Boston University Charles River Campus Public Speaking Speech Anxiety
Exposure-based cognitive behavior therapy is an efficacious treatment for speech anxiety and has been delivered effectively in a virtual reality (VR) environment. The present multicenter study (conducted through the Exposure Therapy Consortium) is designed to evaluate whether trait versus state pos1 expand

Exposure-based cognitive behavior therapy is an efficacious treatment for speech anxiety and has been delivered effectively in a virtual reality (VR) environment. The present multicenter study (conducted through the Exposure Therapy Consortium) is designed to evaluate whether trait versus state positive affectivity is a more effective predictor of exposure therapy outcomes. Further, the investigators will examine whether the predictive significance of trait positive affectivity can be accounted for by examination of baseline levels of self-efficacy, hope, and optimism.

Type: Interventional

Start Date: Oct 2024

open study

Mental Health App for Cancer Survivors Study
University of Wisconsin, Madison Head and Neck Cancer Head and Neck Cancers Depression
The goal of this clinical trial is to adapt a mental health digital app to treat depression among head and neck cancer patients and survivors. Participants will download and use the digital mental health app for a 6-week period, and will complete related surveys. expand

The goal of this clinical trial is to adapt a mental health digital app to treat depression among head and neck cancer patients and survivors. Participants will download and use the digital mental health app for a 6-week period, and will complete related surveys.

Type: Interventional

Start Date: Mar 2025

open study

Imaging Depression in Parkinson's Disease
Yale University Parkinson's Disease Major Depressive Disorder
The goal of this observational study is to identify targetable neural substrates of depression in Parkinson's Disease for the first time in people with Parkinson's between the ages of 40 and 80, who are experiencing symptoms of depression. expand

The goal of this observational study is to identify targetable neural substrates of depression in Parkinson's Disease for the first time in people with Parkinson's between the ages of 40 and 80, who are experiencing symptoms of depression.

Type: Interventional

Start Date: Sep 2024

open study

Lavender Aromatherapy to Decrease Anxiety/Pain Perception During Office Hysteroscopy
University of Florida Anxiety Pain, Procedural
Office hysteroscopy is an invaluable practice to treat a myriad of gynecological processes. However, a limiting factor is the perceived pain and anxiety. In a randomized pilot study, treatment with lavender aromatherapy will significantly decrease the stress/anxiety levels associated with office hy1 expand

Office hysteroscopy is an invaluable practice to treat a myriad of gynecological processes. However, a limiting factor is the perceived pain and anxiety. In a randomized pilot study, treatment with lavender aromatherapy will significantly decrease the stress/anxiety levels associated with office hysteroscopy, as measured on a visual analogue scale and the Hospital Anxiety and Depression Scale (HADS) questionnaire when compared to control subjects receiving distilled water placebo.

Type: Interventional

Start Date: Jun 2024

open study

Targeted Plasticity Therapy for PTSD
The University of Texas at Dallas PTSD, Post Traumatic Stress Disorder
Objectives of this study are to provide continued safety assessment for the ReStore system, and to gain further estimates of the effect size of Vagus Nerve Stimulation (VNS) therapy with Prolonged Exposure Therapy (PE) compared to PE with placebo (sham) stimulation in participants with posttraumati1 expand

Objectives of this study are to provide continued safety assessment for the ReStore system, and to gain further estimates of the effect size of Vagus Nerve Stimulation (VNS) therapy with Prolonged Exposure Therapy (PE) compared to PE with placebo (sham) stimulation in participants with posttraumatic stress disorder (PTSD)

Type: Interventional

Start Date: Dec 2024

open study

Correcting Circadian Rhythms to Breakthrough in Bipolar Disorder
Leslie Swanson Bipolar Disorder Delayed Sleep-Wake Phase Disorder
The purpose of this study is to test whether a dietary supplement (low-dose melatonin) commonly used to treat night owls, administered in conjunction with a behavioral sleep intervention, will help to shift the brain clock earlier and improve mood and sleep in bipolar disorder. Eligible participant1 expand

The purpose of this study is to test whether a dietary supplement (low-dose melatonin) commonly used to treat night owls, administered in conjunction with a behavioral sleep intervention, will help to shift the brain clock earlier and improve mood and sleep in bipolar disorder. Eligible participants will be randomized to receive melatonin plus a behavioral sleep intervention or placebo plus a behavioral sleep placebo. The hypotheses for this study include: - Melatonin plus behavioral sleep intervention (compared to placebo plus behavioral sleep placebo) will produce a greater advance of dim light melatonin onset (DLMO), between pre- and post-treatment. - Melatonin (compared to placebo) will produce a greater reduction in Patient Health Questionnaire-9 score between pre- and post-treatment.

Type: Interventional

Start Date: Aug 2024

open study

Neural Circuit Effects of Ketamine in Depression
Icahn School of Medicine at Mount Sinai Major Depressive Disorder
This project is designed to examine the role of the subgenual anterior cingulate cortex (sgACC) in anhedonia and anxiety in humans with depression, as well as the acute and sustained effects of ketamine on agACC activation and depression symptoms. expand

This project is designed to examine the role of the subgenual anterior cingulate cortex (sgACC) in anhedonia and anxiety in humans with depression, as well as the acute and sustained effects of ketamine on agACC activation and depression symptoms.

Type: Interventional

Start Date: Jan 2024

open study

Effect of Kava on Anxiety and Stress in Cancer Survivors
Masonic Cancer Center, University of Minnesota Kava Anxiety Stress Cancer Depression
This is a pilot, two-arm, randomized, blinded, placebo-controlled cross-over clinical trial to study the safety and effect of 14 days of kava on anxiety and physiologic stress in survivors of cancer and its treatment. Participants will be randomized to take either kava first or placebo first. Kava1 expand

This is a pilot, two-arm, randomized, blinded, placebo-controlled cross-over clinical trial to study the safety and effect of 14 days of kava on anxiety and physiologic stress in survivors of cancer and its treatment. Participants will be randomized to take either kava first or placebo first. Kava 75 mg or placebo will be taken three time daily (TID) for 14 days (Period 1), followed by a washout period of 14-28 days. Thereafter, the participant will take either placebo or kava TID for 14 days (Period 2), whichever he/she did not take in Period 1.

Type: Interventional

Start Date: Jun 2024

open study

Preventing Depression of Chinese American Adolescents by RRE
Northeastern University Subclinical Depressive Symptoms
The goal of this clinical trial is to test if a culturally sensitive mobile health application (Relax, Reflect, Empower-RRE) is feasible and effective in promoting psychological wellbeing and reducing depressive symptoms among Chinese American adolescents (CAA). We will conduct a pilot study of a c1 expand

The goal of this clinical trial is to test if a culturally sensitive mobile health application (Relax, Reflect, Empower-RRE) is feasible and effective in promoting psychological wellbeing and reducing depressive symptoms among Chinese American adolescents (CAA). We will conduct a pilot study of a community sample of 110 CAAs, ages 14-18. We will use adaptive randomization to assign 55 participants to the RRE intervention for 5 days/week for 3 months and 55 to the control group who will receive a wellness check-in text message 5 days/week for 3 months. The main aims/research questions are, 1) To evaluate feasibility and acceptability of RRE. Assessments include both subjective (CAAs' perceptions of feasibility and acceptability of RRE through Mobile Application Rating Scale and open-ended questions) and objective (CAAs' frequency and duration of RRE access automatically recorded) measures. Our hypothesis is that participants in the RRE group will find RRE feasible and acceptable. 2) To investigate CAAs' changes in depressive symptoms, coping self-efficacy, and psychological wellbeing. We will compare if these changes differ in the RRE group and control group. Participants in both RRE and control groups will complete measures of outcomes (depression, coping self-efficacy, psychological wellbeing) and influencing factors (acculturative stress, experiences of discrimination, life events) at three time points: baseline, the end of the preventive intervention (the12th week), and one-month after the intervention (the16th week). Our hypothesis is that CAAs in the RRE group will exhibit lower levels of depressive symptoms and higher levels of coping self-efficacy and psychological well-being in Weeks 12 and 16 than the baseline. Additionally, CAAs in the RRE group will exhibit greater improvement than the control group in the outcome measures from baseline to Weeks 12 and 16.

Type: Interventional

Start Date: Mar 2024

open study

The ROSE Scale-up Study: Informing a Decision About ROSE as Universal PPD Prevention
Michigan State University Postpartum Depression
The Reach Out, Stand Strong, Essentials for New Mothers (ROSE) program is an evidence-based intervention that prevents half of cases of postpartum depression and was one of two interventions recommended by the US Preventive Services Task Force in 2019. All effectiveness trials of ROSE and of the ot1 expand

The Reach Out, Stand Strong, Essentials for New Mothers (ROSE) program is an evidence-based intervention that prevents half of cases of postpartum depression and was one of two interventions recommended by the US Preventive Services Task Force in 2019. All effectiveness trials of ROSE and of the other recommended PPD prevention intervention included only low-income women a single risk factor that doubles incidence of PPD. Thus, the existing evidence base for PPD prevention consists primarily of women at increased risk for PPD. Based on data from the PIs' current implementation study of ROSE, many healthcare and community agencies in this implementation trial (78%) find it is more feasible for them to provide or offer ROSE to every woman as part of their standard workflow, than it is to create a screening and referral process for at risk women. In addition to being more feasible for agencies, universal prevention may also be advantageous because the cost of a screening false negative (resulting in a preventable case of PPD; $32,000) far exceeds the cost of ROSE delivery ($50-$300/woman). Effectiveness of ROSE among low-income women at risk for PPD is known (ROSE prevents ~50% of PPD cases). To inform a recommendation about using ROSE as universal vs. selective or indicated prevention, we need to determine the effectiveness of ROSE among general populations of women, including women screening negative for PPD risk. Thus, this project will assess ROSE effectiveness across PPD risk levels and across prevention approaches in a sample of 2,320 women from a large regional health system (based in Detroit, MI). Each proposed aim gathers a piece of information missing that is needed to guide decision-making about ROSE as universal prevention. We will assess ROSE as universal, selective, and indicated prevention in terms of: (1) ROSE effectiveness relative to a control for each prevention approach in preventing PPD and improving functioning; (2) cost outcome, (3) equity and (4) scalability of each prevention approach; and (5) mechanisms of ROSE effects across PPD risk levels. We will integrate results to advise about ROSE as universal prevention. This definitive PPD prevention trial will show how best to get an evidence-based program to those who need it in settings where they receive perinatal care by addressing a pragmatic and novel question (should ROSE be universal prevention?) and by examining equity and cost-outcome of universal vs. other prevention approaches.

Type: Interventional

Start Date: Jun 2023

open study

Training in Evidence-based Treatments in Psycho-Oncology
Massachusetts General Hospital Distress, Emotional Depression, Anxiety Fatigue Pain Insomnia
The goal of this research study is to train psychotherapists to administer individualized evidence-based psychotherapies in a cancer care setting to participants with elevated levels of distress due to their illness and/or treatment. The intervention will mirror clinical care in psycho-oncology in1 expand

The goal of this research study is to train psychotherapists to administer individualized evidence-based psychotherapies in a cancer care setting to participants with elevated levels of distress due to their illness and/or treatment. The intervention will mirror clinical care in psycho-oncology in which the therapist, collaboratively with their supervisor, will choose specific components of the following evidence-based treatments to administer based on the clinical presentation of the patient and referring problem. - Cognitive Behavioral Therapy (CBT) - Acceptance Commitment Therapy (ACT) - Mindfulness-Based Cognitive Therapy (MBCT) - Mindfulness-Based Stress Reduction (MBSR) - Meaning-Centered Psychotherapy (MCP) - Cognitive Behavioral Therapy for Insomnia (CBT-I) - CBT for other cancer-related physical symptoms like pain, fatigue, and nausea. Participation in this research study is expected to last about 26 weeks. It is expected that about 100 people and 15 therapists will take part in this research study.

Type: Interventional

Start Date: Jan 2023

open study

Impact of Art Therapy on Self-Reported Pain and Anxiety Scores of Patients Waiting to Be Seen in th1
Stony Brook University Anxiety Pain
The objective of this research is to assess the effects of engaging in coloring activities on patients' self-reported pain and anxiety scores while they wait to be seen by a physician in an emergency department (ED). The current literature on patient visits in the ED highlights the significance of1 expand

The objective of this research is to assess the effects of engaging in coloring activities on patients' self-reported pain and anxiety scores while they wait to be seen by a physician in an emergency department (ED). The current literature on patient visits in the ED highlights the significance of anxiety, stress, and frustration in patient experiences, especially when accounting for long wait times before the physician-patient encounter. The study will address this common problem by looking at the potential impact of nature-themed or geometric shape coloring activities on the ED patient experience as it relates to self-reported anxiety and pain scores. Given that long wait times are increasingly being reported across the country, this study may offer a possible meaningful low-budget, low-resource intervention which could be offered to patients.

Type: Interventional

Start Date: Aug 2023

open study

Assessing the Impact of Cannabidiol for Anxiety and Depression in Bipolar Disorder
Mclean Hospital Bipolar Disorder
Preliminary data have suggested that cannabidiol (CBD) may have a number of clinical benefits, including anti-anxiety and antidepressant properties. This study is a pilot open-label clinical trial assessing a custom-formulated high-CBD product over the course of 4 weeks in patients with bipolar dis1 expand

Preliminary data have suggested that cannabidiol (CBD) may have a number of clinical benefits, including anti-anxiety and antidepressant properties. This study is a pilot open-label clinical trial assessing a custom-formulated high-CBD product over the course of 4 weeks in patients with bipolar disorder who experience anxiety.

Type: Interventional

Start Date: Jun 2023

open study

Cannabidiol for Reduction of Brain Neuroinflammation
Massachusetts General Hospital Back Pain Depressive Symptoms
This study will investigate whether cannabidiol (CBD), the primary centrally and peripherally active non-intoxicating compound in the cannabis plant, exerts anti-neuroinflammatory effects in patients with chronic low back pain (cLBP) with or without mild-to-moderate depression. expand

This study will investigate whether cannabidiol (CBD), the primary centrally and peripherally active non-intoxicating compound in the cannabis plant, exerts anti-neuroinflammatory effects in patients with chronic low back pain (cLBP) with or without mild-to-moderate depression.

Type: Interventional

Start Date: Jan 2022

open study

Cervical Plexus Hydrodissection With D5W for PTSD
Dr. Dean Reeves Clinic PTSD
PTSD is a chronic mental health condition that drastically reduces an individual's quality of life Dextrose injection with a small needle has been used for chronic pain patients and observational results have shown it to be effective in reducing anxiety, brain fog, and depression in patients with P1 expand

PTSD is a chronic mental health condition that drastically reduces an individual's quality of life Dextrose injection with a small needle has been used for chronic pain patients and observational results have shown it to be effective in reducing anxiety, brain fog, and depression in patients with PTSD. This randomized trial will compare dextrose injection with a delayed/usual treatment control.

Type: Interventional

Start Date: Jul 2023

open study