Nikha, N.D.N. and Winarti, E. 2023. Covid_19 Literature Review: Analisi Faktor Yang Mempengaruhi Tingkat Keparahan Covid-19. PROFESSIONAL HEALTH JOURNAL. 5, 1sp (Oct. 2023), 112-123. DOI:https://doi.org/10.54832/phj.v5i1sp.491.