Jacob Teitelbaum, M.D. is a board-certified internist and a leading researcher in the field of chronic fatigue and fibromyalgia. He has a specialized practice for CFIDS/FMS patients in Annapolis, Maryland, and is director of the Annapolis Research Center for Effective FMS/CFS Therapies. Dr. Teitelbaum has written numerous articles on the subject, including the recent landmark "Effective Treatment of Chronic Fatigue Syndrome and Fibromyalgia - A Randomized, Double-Blind, Placebo-Controlled, Intent to Treat Study," published in the Journal of Chronic Fatigue Syndrome.