For citations:
Gordeev AV, Matyanova EV, Olyunin YA, Galushko EA, Zotkin EG. Difficult-to-treat rheumatoid arthritis in the clinical practice of a rheumatological hospital. First look. Sovremennaya Revmatologiya=Modern Rheumatology Journal. 2022;16(2):13-20. (In Russ.) https://doi.org/10.14412/1996-7012-2022-2-13-20