1. Division of Metabolism, Endocrinology and Diabetes, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan.
2. Division of Endocrinology and Metabolism, Department of Internal Medicine, University of North Carolina, Chapel Hill, North Carolina.
3. Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia.
4. Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California.
5. Division of Hematology and Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan.