1. Division of Gastroenterology Department of Medicine University of California at San Diego La Jolla CA
2. Department of Internal Medicine Division of Gastroenterology and Hepatology Kyungpook National University Daegu South Korea
3. Division of Preventive Medicine Mayo Clinic Rochester MN
4. Division of Library Sciences Mayo Clinic Rochester MN
5. Medical School Faculty of Health and Medical Sciences The University of Western Australia Nedlands WA Australia