Pengarang: Timothy J. Petersen

Timothy J. Petersen, Ph D Assistant Professor of Psychiatry Massachusetts General Hospital Department of Psychiatry 101 Merrimac Street 10th Floor Boston, MA 02114 USA Susan Sprich, Ph D Clinical Director, Cognitive Behavioral Therapy Program Massachusetts General Hospital         Department of Psychiatry One Bowdoin Square 7th Floor Boston, MA 02114 USA Sabine Wilhelm, Ph D Chief of Psychology, Massachusetts General Hospital Director, OCD and Related Disorders Program, MGH Professor, Harvard Medical School Richard B. Simches Research Center 185 Cambridge Street Boston, MA 02114 USA