Vikas Bhushan, MD, University of California, San Francisco, Class of 1991; Series Editor, Diagnostic Radiologist. Vishal Pall, MBBS, Government Medical College, Chandigarh, India, Class of 1996; Series Editor, University of Texas, Galveston, TX, Resident in Internal Medicine & Preventive Medicine. Tao Le, MD, University of California, San Francisco, Class of 1996. Vladimir Coric, MD, Yale University School of Medicine, Fellow in Psychiatry. Louis Sanfilippo, MD, Yale University School of Medicine, Resident in Psychiatry.