Khan, Nadim, et al. “LAPAROSCOPIC CHOLECYSTECTOMY: AN EXPERIENCE AT LADY READING HOSPITAL, PESHAWAR”. Journal of Ayub Medical College Abbottabad, vol. 22, no. 2, June 2010, pp. 46-51, https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/2942.