Does everyone need to take vitamin D? High prevalence of CYP24A1 deficiency in the Russian population. - Kulikova KS; Papizh SV; Polyakov AV; Marakhonov AV; Beskorovainiy NS; Shumikhina MV; Sozaeva LS; Frolova EB; Kalinchenko NY; Yanar EA; Rozhinskaya LY; Tikhonovich YV; et al. (Problemy endokrinologii, 2025)