1. Division of Endocrinology, Diabetes and Metabolism (J.M.G.), Baylor College of Medicine, Houston, Texas 77030
2. Michael E. DeBakey Veterans Affairs Medical Center, and Huffington Center on Aging (J.M.G., R.G.S.), Baylor College of Medicine, Houston, Texas 77030
3. Department of Anesthesiology and Pain Medicine (J.P.C., P.M.D.), University of Texas, M. D. Anderson Cancer Center, Houston, Texas 77002