1. Department of Gastroenterology, Rabin Medical Center, Tel Aviv University, Israel
2. Division of Gastroenterology, Hillel Jafa Medical Center, Hadera, Technion, Israel
3. Department of Gastroenterology, Trinity College, Dublin, Ireland
4. Division of Gastroenterology, Rambam Health Care Campus, Technion School of Medicine, Haifa, Israel
5. Division of Gastroenterology, Asaf-Harofe Medical Center, Zrifin, Tel Aviv University, Israel
6. Department of Gastroenterology, NIMTS Hospital, Athens, Greece