For citations:

Karpenka A.E., Jandarova E.M., Malaeva E.G., Tsyrulnikova A.N., Shulkina E.V., Kravets K.S., Bychenko M.P. Atypical clinical case of ankylosing spondylitis. Health and Ecology Issues. 2025;22(1):127-136. (In Russ.) https://doi.org/10.51523/2708-6011.2025-22-1-16