For citations:

Kasatkin DS, Molchanova SS, Spirin NN. Early cognitive dysfunction as a marker for the poor course of multiple sclerosis: a prospective 12-year follow-up. Nevrologiya, neiropsikhiatriya, psikhosomatika = Neurology, Neuropsychiatry, Psychosomatics. 2019;11(3):47-51. (In Russ.) https://doi.org/10.14412/2074-2711-2019-3-47-51