1. Division of Endocrinology, Gerontology, and Metabolism (Y.L., X.H., W.-J.S., R.H., V.K.K., S.A., F.B.K.)Palo Alto, California 94304
2. Stanford University Veterans Affairs Palo Alto Health Care System (Y.L., X.H., W.-J.S., R.H., V.K.K., Y.C., A.N.R., S.A., F.B.K.), Palo Alto, California 94304