1. Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.
2. Vanderbilt Center for Diabetes Translation Research, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.
3. Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee.
4. Vanderbilt Eskind Adult Diabetes Center, Nashville, Tennessee.
5. Maternal Fetal Medicine, Vanderbilt Center for Women's Health, Nashville, Tennessee.