1. Assistant professor of Gastroenterology and Hepatology Disease Research Center, Qom University of Medical Sciences, Shahid Beheshti Hospital, Qom, Iran
2. Gastrointestinal and Liver Disease Research Center, Iran University of Medical Sciences, Firoozgar Hospital, Tehran, Iran
3. Department of Internal Medicine, Beheshti Hospital, Qom University of Medical Sciences, Qom, Iran
4. Assistant professor of Anesthesiology, Shahid Beheshti Hospital, Qom University of Medical Sciences, Qom, Iran
5. General Practitioner, Gastroenterology and Hepatology Disease Research Center, Qom University of Medical Sciences, Shahid Beheshti Hospital, Qom, Iran