Jameel, Usba, et al. “SAFETY OF DIRECT TROCAR INSERTION THROUGH UMBILICAL PORT IN LAPAROSCOPIC SURGERY AT KHYBER TEACHING HOSPITAL, PESHAWAR”. Khyber Journal of Medical Sciences, vol. 15, no. 3, Nov. 2022, pp. 125-9, doi:10.70520/kjms.v15i3.361.