1. The Juliet Keiden Institute of Pediatric Gastroenterology and Nutrition Shaare Zedek Medical Center, The Hebrew University of Jerusalem, Jerusalem, Israel
2. Braun School of Public and Community Medicine, The Hebrew University—Hadassah Medical Center, Jerusalem, Israel
3. Clalit Research Institute, Chief’s Office, Clalit Health Services, Tel Aviv, Israel
4. Maccabi Healthcare Services, Tel Aviv, Israel
5. Meuhedet Health Services, Tel Aviv, Israel
6. Leumit Health Services, Tel Aviv, Israel
7. Department of Gastroenterology, Rambam Healthcare Campus, Bruce Rappaport School of Medicine, Technion Israel Institute of Technology, Haifa, Israel
8. Department of Gastroenterology, Chaim Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
9. Department of Gastroenterology and Hepatology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
10. Division of Gastroenterology, Rabin Medical Center, Petah Tivka, and the Sackler Faculty of Medicine, Tel Aviv University, Israel
11. Department of Pediatrics and School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada
12. CHEO Inflammatory Bowel Disease Centre and CHEO Research Institute, Children’s Hospital of Eastern Ontario, Ottawa, Canada