AuthorBret S. Stetka, MD, Editorial Director, Medscape From WebMD ReviewersMichael T. Compton, MD, MPH, Professor of Psychiatry and Behavioral Sciences, The George Washington University School of Medicine and Health Sciences, Washington, DC Disclosure: Michael T. Compton, MD, MPH, has disclosed no relevant financial relationships. Felice N. Jacka, PhD, Associate Professor, Barwon Psychiatric