Mark Fefergrad, MD, MEd, is Assistant Professor and the Director of Postgraduate Education in the Department of Psychiatry at the University of Toronto. He is a leader in post-graduate CBT education and has practiced and taught CBT extensively. Margaret A. (Peggy) Richter, MD, is the inaugural head of the Frederick W. Thompson Anxiety Disorders Centre at Sunnybrook Health Sciences Centre, focused on research and treatment of obsessive-compulsive disorder (OCD) and related conditions. She is also Associate Professor of Psychiatry at the University of Toronto, a scientist with the Brain Sciences Research Program at Sunnybrook Research Institute, and with the Neurogenetics Section, Neurosciences Department, at the Centre for Addiction and Mental Health. Robert Maunder, MD, is Associate Professor in the Department of Psychiatry at the University of Toronto and head of research for Mount Sinai Hospital's Department of Psychiatry. His primary research interest is the role of interpersonal attachment on health. Paula Ravitz, MD, is Associate Professor, Morgan Firestone Psychotherapy Chair, and Associate Director of the Psychotherapy, Health Humanities, and Education Scholarship Division for the Department of Psychiatry at the University of Toronto, where she leads IPT training. She is also the director of the Mt. Sinai Psychotherapy Institute. Her clinical practice, teaching, and research focus on IPT and attachment informed psychotherapy.