1. Divisions of General Internal Medicine, Mayo Clinic, Rochester, Minnesota.
2. Divisions of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota.
3. Divisions of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic, Rochester, Minnesota.
4. Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, Louisville, Kentucky.
5. Mayo Clinic School of Graduate Medical Education, Mayo Clinic College of Medicine and Science, Rochester, Minnesota.