Sulistyowati, Elyana Sri, Septi Sewi Muninggar, and Verarica Silalahi. 2021. “Risk Factors of Covid-19 Confirmed Died Patients in Dr. Kariadi Hospital: A Retrospective Study”. Indonesian Journal of Tropical and Infectious Disease 9 (1):1-8. https://doi.org/10.20473/ijtid.v9i1.22609.