1. Division of Endocrinology, Diabetes & Metabolism, Johns Hopkins University, Baltimore, Maryland
2. Division of Endocrinology, King Saud University College of Medicine, Riyadh, Saudi Arabia
3. Division of General Internal Medicine, Johns Hopkins University, Baltimore, Maryland
4. Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
5. Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, Maryland
6. Division of Endocrinology, Diabetes and Metabolism, The Ohio State University, Columbus
7. Center on Aging and Health, Johns Hopkins University, Baltimore, Maryland