Fetti, Alin-Cornel, et al. “Laparoscopic Cholecystectomy for Overlooked Duplicated Gallbladder”. Annali Italiani Di Chirurgia, vol. 9, no. September, Nov. 2020, pp. 1-5, https://annaliitalianidichirurgia.it/index.php/aic/article/view/481.