For citations:

Krichevskaya OA, Gandaloeva ZM, Demina AB, Dubinina TV. The course of ankylosing spondylitis during pregnancy: intermediate data of a prospective follow-up. Sovremennaya Revmatologiya=Modern Rheumatology Journal. 2019;13(2):61-72. (In Russ.) https://doi.org/10.14412/1996-7012-2019-2-61-72