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. Hoang Nguyen, MD, MBA, Northwestern University, Class of 2001. Nutan Sharma, MD, PHD, Brigham & Women's Hospital, Boston, MA, Fellow in Neurology.