aDivision of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
bDepartment of Anesthesiology & Pain Medicine, University of Washington, Seattle, Washington
cDivision of Endocrinology and Metabolism, University of Minnesota Medical Center, Minneapolis, Minnesota
dDivision of Gastroenterology, Hepatology, and Nutrition, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
Correspondence to Dhiraj Yadav, MD, MPH, Professor of Medicine, Division of Gastroenterology & Hepatology, University of Pittsburgh Medical Center, 200 Lothrop Street, M2, C-wing, Pittsburgh, PA 15213, USA. Tel: +412 648 7078; fax: +412 383 8992; e-mail: [email protected]