Professore associato, Gastroenterologia, Fondazione Policlinico Universitario A. Gemelli …

Professor of Medicine, Gastroenterology Fellowship Program Director, University of Kansas

Clinical Professor of Medicine

Istanbul Medical Faculty Department of Surgery

Professor of Surgery, NYU Langone Hospital Long Island

Taichung Veterans General Hospital

Professor of Pediatrics (Tenured), The Ohio State University College of Medicine, PI

associate professor of surgery

University of Washington

Professor of Surgery, University of Kentucky