Joshi, M. R., T. P. Bohara, S. Rupakheti, A. Parajuli, D. K. Shrestha, D. Karki, and U. Laudari. “Pre-Operative Prediction of Difficult Laparoscopic Cholecystectomy”. Journal of Nepal Medical Association, vol. 53, no. 200, Dec. 2015, pp. 221-6, doi:10.31729/jnma.2734.