Chindarkar H, Dumbre R, Fernandes A, Phalgune D. Study of correlation between pre-operative ultrasonographic findings and difficult laparoscopic cholecystectomy. Int Surg J [Internet]. 2018 Jun. 25 [cited 2026 Feb. 20];5(7):2605-11. Available from: https://www.ijsurgery.com/index.php/isj/article/view/3088