aDepartment of Internal Medicine, BronxCare Health System, Bronx, New York

bDivision of Gastroenterology, Hepatology & Nutrition, Allegheny Health Network, Pittsburgh, Pennsylvania

cDivision of Gastroenterology and Hepatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA

Correspondence to Parambir S. Dulai, MD, Associate Professor of Medicine, Director of GI Clinical Trials, Director of Precision Medicine, Division of Gastroenterology and Hepatology, Feinberg School of Medicine Northwestern University, Arkes Pavilion, 676N. Saint Clair Street, 14th Floor, Room 14-012, Chicago, IL 60611, USA. Tel: +1 312 694 7640; e-mail: [email protected]