University of Pennsylvania

Professor of Gastroenterology, Catholic University, Gemelli Hospital, Rome, Italy

Professor of Surgery, Icahn School of Medicine at Mount Sinai

Full Professor of Internal Medicine

Department of Medicine - University of Padova, Italy

Zhejiang university

Vincent Astor Distinguished Professor of Medicine, Weill Cornell Medical College

Hopital Paul Brousse - Université Paris-Saclay

Professor of Hepatology, University of Edinburgh

Professor of Medicine, University of Minnesota Medical School, Minneapolis, MN