1. Laboratorio de Hígado; Páncreas y Motilidad (HIPAM)-Department of Experimental Medicine; Faculty of Medicine-Universidad Nacional Autónoma de México (UNAM); Hospital General de México; Mexico City Mexico
2. Gastroenterologia A; Department of Internal Medicine and Medical Specialties; University La Sapienza; Rome Italy
3. Department of Gastroenterology; Sanjay Gandhi Postgraduate Institute of Medical Science; Lucknow India
4. Department of Gastroenterology; University of Ulsan College of Medicine; Asan Medical Center; Seoul Korea
5. Division of Gastroenterology; Mount Sinai School of Medicine; New York NY USA
6. Division of Gastroenterology and Hepatology; Houston Methodist Hospital and Weill Cornell Medical College; Houston TX USA
7. Department of Medicine; Yong Loo Lin School of Medicine; National University of Singapore; Singapore Singapore
8. Faculty of Health Sciences; Ben-Gurion University of the Negev; Beer-Sheva Israel