1. IBD Clinic, Gastroenterology Department, Sheba Medical Center, Derech Sheba 2, Ramat Gan 52621 Israel
2. Department of Management, Health Systems Management, Bar Ilan University, Ramat Gan, Israel
3. IBD Clinic, Gastroenterology Department, Sheba Medical Center, Ramat Gan, Israel
4. Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel