1. Open versus closed method of establishing pneumoperitoneum for laparoscopic surgery;Juneja I;Int J Res Med,2016
2. Laparoscopic entry techniques: clinical guideline, national survey, and medicolegal ramifications;Varma R;Surg Endosc,2008
3. Comparison between veress needle (closed) technique and open technique in laparoscopic cholecystectomy;Nawaz T;Jr Rawal Med Col,2016
4. Entry complications in laparoscopic surgery;Krishnakumar S;J Gynecol Endosc Surg,2009
5. Closed vs. open method of pneumoperitonium at infra-umbilical site in laparoscopic surgery - A comparative study;Jamil M;JPMA J Pak Med Assoc,2018