Rafiq, D. M. Y.; Ikram, A.; Afzal, A.; Zaman, G.; Usman, B.; Ayyub, M. VENTILATOR ASSOCIATED PNEUMONIA AMONG PATIENTS ON MECHANICAL VENTILATION AT TERTIARY CARE CENTRES: Ventilator Associated Pneumonia. Pak Armed Forces Med J 2018, 68 (1), 75-79.