Chest X-Ray using Brixia and Fractional Inspiratory Oxygen as Severity and Mortality predictor of COVID-19. - Alfian Nur Rosyid; Arina Dery Puspitasari; Erika Soebakti; Anggraini Dwi Sensusiati; Jusak Nugraha; Muhammad Amin (ICMHI, 2023)