For citations:
Urban M.A., Komissarova N.V., Khazieva I.I., Shamsutdinova I.I. Predictors of transition from relapsing‑remitting multiple sclerosis to secondary progressive. Medical alphabet. 2023;(14):40-44. (In Russ.) https://doi.org/10.33667/2078-5631-2023-14-40-44