1. Division of General Internal Medicine, Mayo Clinic, Rochester, Minnesota
2. Department of Family and Community Medicine, University of Illinois College of Medicine at Rockford, Rockford, Illinois
3. Division of Infectious Diseases, Mayo Clinic, Rochester, Minnesota
4. Emeritus Member, Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
5. Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic, Rochester, Minnesota
6. Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
7. Division of Gastroenterology, Hepatology and Nutrition, University of Louisville, Kentucky