Elsesmita, E., I. . Medison, and D. . Herman. “Differences In Interleukin-6 and Liver Enzyme Level Based On Clinical Severity of COVID-19 Patients at Dr. M. Djamil General Hospital, Padang”. Respiratory Science, vol. 5, no. 3, June 2025, pp. 153-66, doi:10.36497/respirsci.v5i3.171.