1. From the Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, NY (RJ and RGB); Channing Laboratory, Department of Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, MA (CAC, WCW, and RGB); the Departments of Nutrition (RV and WCW) and Epidemiology (CAC and WCW), Harvard School of Public Health, Boston, MA; the Department of Emergency Medici