Persistent Depressive Disorder

• Charité, University Medicine Berlin — Berlin, State of Berlin, Germany
• Universitätsklinikum Bonn — Bonn, Germany
• Medizinische Hochschule Hannover — Hanover, Germany
• Universitätsklinikum Jena — Jena, Germany

• Nova Scotia Health Authority — Halifax, Nova Scotia, Canada

• Department of Clinical Psychology and Psychotherapy, Institute of Psychology, Heidelberg University — Heidelberg, Germany

• University of Pennsylvania — Philadelphia, Pennsylvania, United States

• University at Buffalo — Buffalo, New York, United States
• Duke University — Durham, North Carolina, United States
• Wake Forest Health Sciences — Winston-Salem, North Carolina, United States

• University of Surrey — Guildford, Surrey, United Kingdom

• Surrey and Borders Partnership NHS Foundation Trust — Guildford, Surrey, United Kingdom

• Babeș-Bolyai University — Cluj-Napoca, Cluj, Romania

Not specified

• Ralph H. Johnson VA Medical Center, Charleston, SC — Charleston, South Carolina, United States