Simatupang, Nanda Agustian, Vitri Widyaningsih, and Sumardiyono Sumardiyono. 2021. “A Meta-Analysis: Correlation Between Hypertension of Comorbidity on Mortality in Patients With COVID-19”. Journal of Epidemiology and Public Health 6 (1):60-69. https://doi.org/10.26911/jepublichealth.2021.06.01.07.