NYU, New York, New York, United States
Washington University in St. Louis, Saint Louis, Missouri, United States
Chaim Sheba Medical Center, Tel Hashomer, Israel
Washington University School of Medicine, Saint Louis, Missouri, United States
UMC Of JOHANNES GUTENBERG-UNIVERSITY MAINZ, Mainz, Germany
Erasmus medical center, Rotterdam, Netherlands
University Medical Centre (UMC) Radboud Department of Gastroenterology and Hepatology, Nijmegen, Netherlands
HaEemek Medical Center, 'Afula, IL, Israel
Clinica San Rafael, Cadiz, Spain