Ayub, Fatima, et al. “SHORT-TERM OUTCOMES IN PATIENTS UNDERGOING MECHANICAL VENTILATION IN A TERTIARY CARE CENTRE IN SIALKOT: Mechanical Ventilation”. Pakistan Armed Forces Medical Journal, vol. 68, no. 4, Aug. 2018, pp. 1007-12, https://pafmj.org/PAFMJ/article/view/69.