Bahli, Zahid Mehmood. “DOES EVIDENCE BASED MEDICINE SUPPORT THE EFFECTIVENESS OF SURGICAL FACEMASKS IN PREVENTING POSTOPERATIVE WOUND INFECTIONS IN ELECTIVE SURGERY?”. Journal of Ayub Medical College Abbottabad 21, no. 2 (June 1, 2009): 166–170. Accessed April 30, 2025. https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/3652.