Farhanchi, Afshin, Moigan Rahmani, Ladan Moharamzadeh, and Pooya Kalani. “The Comparisons of Intra-Peritoneal Bupivacaine Instillation Versus Trendelenburg Position and Valsalva Maneuver on the Laparoscopic Cholecystectomy-Induced Abdominal and Shoulder Pain”. Archives of Anesthesiology and Critical Care 1, no. 3 (October 3, 2015): 67-71. Accessed November 17, 2019. http://aacc.tums.ac.ir/index.php/aacc/article/view/3.