Zahid, M. A., et al. “COMPARISON OF SINGLE DOSE AND THREE DOSE ANTIBIOTIC PROPHYLAXIS WITH CEFOTAXIME SODIUM IN CHOLECYSTECTOMY”. Journal of Ayub Medical College Abbottabad, vol. 15, no. 1, Mar. 2003, https://www.jamc.ayubmed.edu.pk/index.php/jamc/article/view/3935.