1. Department of Medical and Surgical Science, University of Foggia, Foggia, Italy.
2. Department of General and Special Pediatrics, Olga Hospital (Klinikum Stuttgart), Stuttgart, Germany.
3. Department of Pediatric Gastroenterology, King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia.
4. Department of Neonatal Perinatal Medicine, Adan Hospital, Ahmadi, Kuwait.
5. Division of Pediatric Gastroenterology, Children's Specialized Hospital, King Fahad Medical City, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia.
6. Department of Pediatric Gastroenterology, King Abdulaziz University Hospital, Jeddah, Saudi Arabia.
7. Pediatrics Department, Al-Adan Hospital, Ministry of Health, Kuwait City, Kuwait.
8. Department of Child Health, Pediatric Gastroenterology, Hepatology and Nutrition, Royal Hospital, Muscat, Oman.
9. Pediatrics/Pediatric Gastroenterology Unit, Hotel Dieu de France, Beirut, Lebanon.
10. Pediatric Department, Dr Sulaiman Al Habib Hospital, Dubai, UAE.
11. Pediatric Department, Istishari Hospital, Amman, Jordan.
12. Pediatric Department, Salmaniya Medical Complex/Arabian Gulf University, Manama, Bahrain.
13. Department of Pediatrics, Royal Hospital, Abu Dhabi, UAE.
14. Department of Pediatrics, The University of Jordan, Amman, Jordan.
15. Department of Pediatrics, Mofid Children's Hospital, Pediatric Gastroenterology, Hepatology, and Nutrition Research Center, Research Institute for Children Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
16. Pediatric Department, Saint George Hospital, Beirut, Lebanon.