“…Previous studies have examined the prevalence and associated factors of MS in numerous countries and world regions [ 1 , 2 , [6] , [7] , [8] , [9] ]. Despite of its importance, the MS prevalence, however, has only scarcely been investigated in Eastern Europe and Russia [ [9] , [10] , [11] , [12] , [13] , [14] ]. Knowledge about the frequency of MS is essential to address the disorder and improve its prevention in public health measures.…”