Azzam Nahla, Alotaibi Nora, Almadi Majid, Aljebreen Abdulrahman
Division of Gastroenterology, Department of Medicine, College of Medicine, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia.
Saudi J Gastroenterol. 2020 Sep-Oct;26(5):279-282. doi: 10.4103/sjg.SJG_425_20.