Kidwai, A. A., S. Razzaq, Q. Jamal, S. Aatif, and S. Paracha. “ANTIBIOTIC RESISTANCE AMONG GRAM NEGATIVE BACILLI CAUSING VENTILATOR – ASSOCIATED PNEUMONIA”. Pakistan Journal of Chest Medicine, vol. 17, no. 3, May 2015, https://pjcm.net/index.php/pjcm/article/view/122.