Rafiq, Dr Muhammad Yasir, et al. “VENTILATOR ASSOCIATED PNEUMONIA AMONG PATIENTS ON MECHANICAL VENTILATION AT TERTIARY CARE CENTRES: Ventilator Associated Pneumonia”. Pakistan Armed Forces Medical Journal, vol. 68, no. 1, Feb. 2018, pp. 75-79, https://pafmj.org/PAFMJ/article/view/1569.