K. H. Qureshi, A. . Rasheed, M. Z. . Saleem, J. Zafar, Syed Ali Raza Ali Shah, and Bilal Ahmad, “Frequency of Ventilator Associated Pneumonia with Closed Tracheal Suction versus Open Tracheal Suction”, Pak Armed Forces Med J, vol. 75, no. SUPPL-2, pp. S335-S339, Mar. 2025, doi: 10.51253/pafmj.v75iSUPPL-2.11443.