Mohanty, A., A. Kabi, A. P. Mohanty, P. Gupta, and P. Gupta. “Diagnostic Usefulness of Transtracheal Aspiration in Lower Respiratory Tract Infections”. International Journal of Research in Medical Sciences, vol. 5, no. 12, Nov. 2017, pp. 5203-6, doi:10.18203/2320-6012.ijrms20175097.