F. . Sofwan, J. Kurniawaty, and B. . Adiyanto, “Validasi National Early Warning Score 2 (News2) Dewasa untuk Memprediksi Mortalitas Pasien COVID-19 di RSUP. Sardjito Yogyakarta”, J. Kompl. Anest., vol. 9, no. 3, pp. 29–36, May 2023.