Vizir, . V. A., Sadomov, A. S., & Demidenko, O. V. (2021). Use of tocilizumab in the combination treatment of a COVID-19 patient with concomitant rheumatoid arthritis (a case report). Zaporozhye Medical Journal, 23(5), 739–748. https://doi.org/10.14739/2310-1210.2021.5.232322