1. Geriatric Research, Education and Clinical Center, Baltimore Veterans Affairs Health Care Center, Division of Gerontology, Department of Medicine, School of Medicine, University of Maryland, Baltimore, Maryland
2. Diabetes Unit, National Center for Complementary and Alternative Medicine, National Institutes of Health, Bethesda, Maryland
3. Division of Endocrinology, Department of Medicine, School of Medicine, University of Maryland, Baltimore, Maryland
4. Laboratory of Cellular and Developmental Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland