Ahmed, Saniya, Rabia Iftikhar, and Mehreen Fatima. 2019. “The Frequency Of Empyema/Gangrene In Acute Cholecystitis And Its Relationship With Gender”. Journal of Rawalpindi Medical College 22 (S-2), 93-95. http://journalrmc.com/index.php/JRMC/article/view/1013.