For citations:
Kovalenko PS, Dydykina IS, Smirnov AV, Glukhova SI, Nasonov EL. Back pain in patients with rheumatoid arthritis (based on long-term prospective observation). Sovremennaya Revmatologiya=Modern Rheumatology Journal. 2025;19(4):54-59. (In Russ.) https://doi.org/10.14412/1996-7012-2025-4-54-59