Perveen, I., M. Q. Hasan, and M. A. Mosabbir. “Clinical and Endoscopic Profile of Patients With Upper Gastro-Intestinal Bleeding (UGIB)”. Journal of Enam Medical College, vol. 9, no. 2, May 2019, pp. 78-83, doi:10.3329/jemc.v9i2.41408.