For citations:

Dreval RO. Cost-effectiveness study of treatment with biologic disease-modifying antirheumatic drugs in adult patients with active ankylosing spondylitis. Sovremennaya Revmatologiya=Modern Rheumatology Journal. 2021;15(1):128-135. (In Russ.) https://doi.org/10.14412/1996-7012-2021-1-128-135