Afzal, M., Rehman, S., Mian, M. A., & Ahmed, R. (2017). RATE AND REASONS OF CONVERSION OF LAPAROSCOPIC CHOLECYSTECTOMY TO OPEN CHOLECYSTECTOMY? A PROSPECTIVE ANALYSIS OF 450 CONSECUTIVE LAPAROSCOPIC CHOLECYSTECTOMIES: Conversion of Laparoscopic Cholecystectomy To Open One?. Pakistan Armed Forces Medical Journal, 66(1), 117-21. https://pafmj.org/PAFMJ/article/view/393