1. Division of Gastroenterology, Department of Internal Medicine, Mubarak Alkabeer University Hospital, Kuwait University , Aljabreyah , Kuwait
2. Department of Pharmacy Practice, Faculty of Pharmacy, Health Science Center, Kuwait University , Aljabreyah , Kuwait
3. Division of Gastroenterology, Johns Hopkins School of Medicine , Washington, DC , USA
4. Division of Gastroenterology, School of Medicine, McGill University Health Center , Montreal, Quebec , Canada