1. Division of Endocrinology, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina;
2. Department of Endocrinology and Metabolism, University Medical Center, Groningen and University of Groningen, Groningen, the Netherlands;
3. Department of Internal Medicine and Epidemiology, University of Michigan, Ann Arbor, Michigan;
4. Desert Oasis Health Care, Palm Springs, California;
5. U.S. Medical Division, Lilly USA, Indianapolis, Indiana.