1. Division of General Internal Medicine
2. Second Department of Internal Medicine, Charles University Faculty of Medicine, Hradec Kralove, Czech Republic
3. Division of Infectious Diseases
4. Division of Gastroenterology and Hepatology
5. Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic, Rochester, Minnesota, USA
6. Division of Gastroenterology, Hepatology and Nutrition, University of Louisville, Kentucky, USA