Ardabili, A. V., and S. F. Sarabi. “Correlation Between the Elevated Level of Interleukin-6 Following Actemra Administration and the Mortality Rate of Seven Severe COVID-19 Patients”. International Journal Of Community Medicine And Public Health, vol. 11, no. 5, Apr. 2024, pp. 2037-40, doi:10.18203/2394-6040.ijcmph20241204.