Balan, D., Lakshamanamurthy, S.B. and Subbarayappa, D.A. 2022. Predictors of failure of non-invasive ventilation in severe COVID-19 patients. International Journal of Research in Medical Sciences. 10, 5 (Apr. 2022), 1151–1156. DOI:https://doi.org/10.18203/2320-6012.ijrms20221011.