Chotai, N. R., B. B. Choksi, S. Damor, and A. Bhedi. “Intraperitoneal Access by Closed Method (veress Needle) Versus Open (Hasson’s) Method in Laparoscopic Surgery to Create Pneumoperitoneum”. International Surgery Journal, vol. 4, no. 8, July 2017, pp. 2786-90, doi:10.18203/2349-2902.isj20173419.