Gupta, P., N. K. Agarwal, P. Gupta, and S. P. Singh. “To Compare Single Incision Laparoscopic Cholecystectomy With Standard Laparoscopic Cholecystectomy for Treatment of Symptomatic Cholelithiasis: A Prospective Randomized Study”. International Surgery Journal, vol. 3, no. 2, Dec. 2016, pp. 900-4, doi:10.18203/2349-2902.isj20161164.