Joshi, Mukund Raj, Tanka Prasad Bohara, Shail Rupakheti, Anuj Parajuli, Dipendra Kumar Shrestha, Dimindra Karki, and Uttam Laudari. “Pre-Operative Prediction of Difficult Laparoscopic Cholecystectomy”. Journal of Nepal Medical Association 53, no. 200 (December 31, 2015): 221-226. Accessed September 25, 2020. https://www.jnma.com.np/jnma/index.php/jnma/article/view/2734.