F. N. Akbar, F. A. Tjakradidjaja, H. Hendarto, S. Ridho, .-. Nursyahidah, and L. A. Rahma, “Proportion of Peptic Ulcer Patients Based on Esophagogastroduodenoscopy (EGD) Examination at Jakarta Haji Hospital 2015-2018”, Int. J. Hum. Health Sci., vol. 5, no. 1, pp. 27–30, Jul. 2020.