Arain A, Mansoor ul Haq M, Ashraf P, Shaikh H, Ramay A H. To Determine the Frequency of the Common Causes of Lower Gastrointestinal Bleeding by Colonoscopy at a Tertiary Care Hospital. j Muhammad Med Coll [Internet]. 2013May20 [cited 2024Dec.27];3(2):50-3. Available from: https://jmmc.mmc.edu.pk/index.php/JMMC/article/view/381