For citations:
Pigarova E.A., Rozhinskaya L.Y., Katamadze N.N., Povaliaeva A.A., Troshina E.A. Prevalence of vitamin D deficiency in various regions of the Russian Federation: results of the first stage of the multicenter cross-sectional randomized study. Osteoporosis and Bone Diseases. 2020;23(4):4-12. (In Russ.) https://doi.org/10.14341/osteo12701

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