Choudhry, Zafar Ali, Muhammad Saleem Iqbal, Muhammad Latif, and Kamran Hamid. “Comparison of Direct Trocar Versus Veress Needle Insertion in Creation of Pneumoperitoneum in Patients Undergoing Laparoscopic Cholecystectomy”. Annals of Punjab Medical College 13, no. 2 (February 19, 2019): 126-129. Accessed December 30, 2024. https://apmcfmu.com/index.php/apmc/article/view/68.