Sutadji, J. C., A. D. W. Widodo, and D. N. Indiastuti. “Mortality Comparison of Using Anti Interleukin-6 Therapy and Using Standard Treatment in Severe Covid-19”. Folia Medica Indonesiana, vol. 57, no. 2, June 2021, pp. 158-65, doi:10.20473/fmi.v57i2.21929.