Ahmed Anis Abdullah, Ibrahim Awad Mahdi Alyami, Muayyad Abdullah Abualjadayel, et al. “Irritable Bowel Syndrome in Saudi Adult Patient in King Khalid Hospital”. International Journal of Innovative Research in Medical Science, vol. 2, no. 06, June 2017, p. 884 to 896, doi:10.23958/ijirms/vol02-i06/13.