Polydora, E. Alexandrou, M. Tsipilis, S. Athanasiou, N. Katsoulis, M. Rodopoulou, A. Pappas, A. Kalomenidis, I., Predictors of high flow oxygen therapy failure in COVID-19-related severe hypoxemic respiratory failure, Journal of thoracic disease, (14), 851-856, 2022, AME Publishing Company,