Jaime Toro, MD, is Professor and Director of the Programme of Neurology at the Fundación Santa Fe de Bogotá/Universidad El Bosque and Professor of Neurology at the Universidad de los Andes, Bogotá, Colombia. His clinical and research work focuses on multiple sclerosis, and he has edited two major neurology textbooks. He received his training in general neurology in his native country of Colombia and in neurophysiology in Washington, D.C. From 1986 to 1988, he was President of the Colombian Neurological Association. He is a Fellow of the American College of Physicians, and he is a member of the editorial board of Multiple Sclerosis and Related Disorders. Dr. Toro has served on the NEJM Journal Watch Neurology board since the publication’s launch in 1999.