1. Department of Pharmacotherapy and Outcomes Sciences; Virginia Commonwealth University, Richmond, Virginia.
2. Diabetes, Endocrinology and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland.
3. Division of Endocrinology Diabetes and Metabolism, Virginia Commonwealth University, Richmond, Virginia.
4. Food and Drug Administration, Silver Spring, Maryland.