S. A. . NAQI, A. Z. . KHAN, A. . KAMRAN, M. N. . ASLAM, A. R. . ARSHAD, and T. . MAHMOOD, “Gastro Esophageal Reflux Disease: Incidence of GERD in 100 Consecutive Upper G.I. Endoscopies at S.G.R.H”., Annals KEMU, vol. 5, no. 2, pp. 165–166, Jun. 2020.