A. S. Rozi, N. P. Parsama Putra, U. A. Setyawan, and A. S. Listyoko, “Comparison of ROX Index and Surfactant Protein-D with HFNC Outcome in COVID-19 Patients”, Medica Hospitalia J. Clin. Med., vol. 10, no. 2, pp. 224–229, Jul. 2023.