1. From the Division of Geriatrics and Nutritional Sciences, Department of Internal Medicine (EPW, SBR, DTV, LF, SK, and JOH) and the Division of Biostatistics (KS-M and KBS),Washington University School of Medicine, St Louis, MO, and the Division of Food Science, Human Nutrition and Health, Istituto Superiore di Sanitá, Rome, Italy (LF)