Michael B. First M.D., is a Professor of Clinical Psychiatry at Columbia University and a Research Psychiatrist at the Division of Clinical Phenomenology at the New York State Psychiatric Institute. Janet B.W. Williams, Ph.D., is Professor Emerita of Clinical Psychiatric Social Work (in Psychiatry and Neurology), Columbia University and Senior Vice President of Global Science, at MedAvante, Inc. Rhonda S. Karg, Ph.D., Research Psychologist, Division of Behavioral Health and Criminal Justice Research, RTI International, Durham, North Carolina Robert L. Spitzer, M.D., is Professor Emeritus of Psychiatry at Columbia University.