1. Division of Gastroenterology, American University of Beirut Medical Center, Beirut, Lebanon
2. Digestive Diseases Unit, Rashid Hospital, Dubai, UAE
3. Gastroenterology Division, King Khalid University Hospital, King Saud University, Riyadh, Kingdom of Saudi Arabia
4. Department of Gastroenterology, Royal Hospital, Muscat, Oman
5. Pfizer Inc, Dubai, UAE
6. Department of Gastroenterology, Inflammation and Immunology Medical Affairs, Pfizer Inc, Collegeville, PA, USA
7. Department of Inflammation and Immunology, Pfizer Inc, Amman, Jordan
8. Department of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia