1. Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, Vanderbilt University Medical Center, Nashville, TN
2. Vanderbilt University School of Medicine, Nashville, TN
3. Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, TN
4. Division of General Internal Medicine and Public Health, Department of Internal Medicine, Vanderbilt University Medical Center, Nashville, TN