Komar, Hafizd, Hero Akbar, and Theodorus. 2020. “Predictor Factors of Difficult Laparoscopic Cholecystectomy in Cholelithiasis Patients at Mohammad Hoesin Hospital, Palembang”. Sriwijaya Journal of Surgery 3 (2), 112-19. https://doi.org/10.37275/sjs.v2i2.33.