Raina, S., J. I. Gulshan, and S. K. Bhasin. “A Comparative Study of Single Incision Laparoscopic Cholecystectomy Versus Four Port Laparoscopic Cholecystectomy”. International Journal of Research in Medical Sciences, vol. 12, no. 5, Apr. 2024, pp. 1594-00, doi:10.18203/2320-6012.ijrms20241247.