Parimala L, Kavitha K, Sangeetha R, and Mary Bhagyalatha R. “Effect of Oral Care on Bacterial Colonization and Ventilator-Associated Pneumonia”. International Journal of Research in Pharmaceutical Sciences, vol. 11, no. (SPL 4), Dec. 2020, pp. 162-6, https://ijrps.com/home/article/view/1473.