N. A. B. . Nik Muhamad Affendi, F. binti . Ismail, K. A. B. Jaafar, . M. A. B. . Md Jalil, and W. H. F. B. . Wan Abdul Jalil, “Retrospective Study on Upper Gastrointestinal Endoscopic Findings in Patients with Dyspepsia without Alarm Features in International Islamic University Malaysia Medical Centre”, imjm, vol. 17, no. 1, Dec. 2018.