1. Joint Endocrinology, Diabetes & Metabolism Fellowship at Baylor College of Medicine/The University of Texas-M.D. Anderson Cancer Center, Houston, Texas.
2. Clinical Endocrinology Branch, National Institute of Diabetes, Digestive, and Kidney Diseases, National Institutes of Health, Bethesda, Maryland.
3. Current address: Bristol-Myers-Squibb, Inc., Princeton, New Jersey.
4. Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland.
5. Current address: Hopkins Bayview Medical Center, Baltimore, Maryland.
6. Department of Endocrine Neoplasia & Hormonal Disorders, The University of Texas-M.D. Anderson Cancer Center, Houston, Texas.