Institution: | 1. Division of Gastroenterology and Hepatology, Mayo Clinic, , Rochester, MN, USA;2. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Korea University College of Medicine, , Seoul, South Korea;3. Division of Biomedical Statistics and Informatics, Mayo Clinic, , Rochester, MN, USA;4. Faculty of Health, University of Newcastle, , Callaghan, NSW, Australia |