Kamran, Muhammad, Asher Fawwad, Syed Iftikhar Haider, Tahir Hussain, and Jameel Ahmed. 2020. “Upper Gastrointestinal Endoscopy; A Study from a rural population of Sindh, Pakistan”. Pakistan Journal of Medical Sciences 37 (1). https://doi.org/10.12669/pjms.37.1.3297.