1. Department of Internal Medicine, King Fahad Specialist Hospital, Burydah 52366, Saudi Arabia
2. Gastroenterology and Endoscopy Unit, King Fahad Specialist Hospital, Burydah 52366, Saudi Arabia
3. Department of Internal Medicine, Buraydah Central Hospital, Burydah 52361, Saudi Arabia
4. Department of Internal Medicine, King Saud Hospital, Onaizah 56437, Saudi Arabia
5. Department of Internal Medicine, Medical College, Najran University, Najran 61441, Saudi Arabia
6. Department of Internal Medicine, Medical College, Ha’il University, Ha’il 55476, Saudi Arabia