1. Division of Endocrinology, Diabetology, and Nutrition (N.C., B.P., A.M.C.), Department of Internal Medicine, Faculty of Medicine, CH-1211 Geneva, Switzerland;
2. Jean Meyer United States Department of Agriculture Human Nutrition Research Center on Aging at Tufts University (A.S.G.), Boston, Massachusetts 02111;
3. Veterans Affairs Palo Alto Health Care System and Stanford University (F.B.K.), Stanford, California 94305