[1] Pediatric Gastroenterology Unit, E. Wolfson Medical Center, Holon
[2] Pediatric Gastroenterology Unit, Soroka Medical Center, Beer-Sheba
[3] Pediatric Gastroenterology Unit, Assaf Harofe Medical Center, Zrifin
[4] Rambam Medical Center, Haifa
[5] Bnei Zion Medical Center, Haifa
[6] Carmel Medical Center, Haifa
[7] Schneider Childrens Medical Center, Petah-Tikva
[8] Poriah Hospital, Teberias
[9] Sheba Medical Center, Tel Aviv Univ. Sackler Sch. of Med., Ramat-Gan
[10] Department of Pediatrics, B Sheba Medical Center, Tel Hashomer