For citations:
Kovalevа IV, Bakleicheva MO, Bespalova ON. Assessment of the vitamin d levels effect on the course of the first trimester of pregnancy. Meditsinskiy sovet = Medical Council. 2021;(21-2):131-137. (In Russ.) https://doi.org/10.21518/2079-701X-2021-21-2-131-137