Hina, R. e, H. Mansoor, K. Bilal, A. Asghar, M. A. Saif Ullah, and T. R. Zahid. “Variceal Hemorrhage As the Commonest Cause of Presentation With Acute Upper Gastrointestinal Bleeding: A Paradigm Shift”. Annals of Punjab Medical College, Vol. 15, no. 3, Sept. 2021, pp. 195-8, doi:10.29054/apmc/2021.1168.