Shoaib Hanif, Muhammad, et al. “LAPAROSCOPIC CHOLECYSTECTOMY FOR EMPYEMA GALL BLADDER: Empyema Gall Bladder”.
Pakistan Armed Forces Medical Journal
, vol. 67, no. 3, June 2017, pp. 376-80,
https://www.pafmj.org/PAFMJ/article/view/473
.