Arain A, Mansoor ul Haq M, Ashraf P, Shaikh H, and Ramay A H. “To Determine the Frequency of the Common Causes of Lower Gastrointestinal Bleeding by Colonoscopy at a Tertiary Care Hospital.”. JMMC 3, no. 2 (May 20, 2013): 50-53. Accessed July 6, 2024. https://mmc.edu.pk/jmmc/index.php/JMMC/article/view/381.