Karmacharya, A., Malla, B., Joshi, H., Gurung, R. and Rajbhandari, M. (2015) “The Predictive Value of Pre-Operative Symptoms Including Upper Gastrointestinal Endoscopy Before Laparoscopic Cholecystectomy for Elective Symptomatic Cholecystolithiasis”, Kathmandu University Medical Journal, 11(4), pp. 300–304. doi: 10.3126/kumj.v11i4.12526.