For citations:
Platonova N.M., Rybakova A.A., Nikankina L.V., Malysheva N.M., Andreeva E.N., Pokusaeva V.N., Boyko E.L., Troshina E.A. Vitamin D and pregnancy: current state of the problem in the central regions of the Russian Federation. Problems of Endocrinology. 2020;66(6):81-87. (In Russ.) https://doi.org/10.14341/probl12693

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