Vardar, Yasar Murat, and Okan Murat Akturk. “Can We Predict the Risk of Conversion in Elective Laparoscopic Cholecystectomy?”. Annali Italiani Di Chirurgia, vol. 91, no. 2, Mar. 2020, pp. 181-6, https://annaliitalianidichirurgia.it/index.php/aic/article/view/1490.