1. From the Departments of Nutrition (HAB-F, EO, and WCW), Epidemiology (RL and DS), and Biostatistics (RL, DS, and JEO), Harvard School of Public Health, Boston, MA; the Department of Rheumatology and the Institute for Physical Medicine and Rehabilitation, University Hospital Zurich, Zurich, Switzerland (HAB-F); the Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston,