For citations:

Grechkina L.I., Karandasheva V.O. Age-Specific Features of the Functional Development of the Circulatory System in Children Living in Northeastern Russia. Public Health and Life Environment – PH&LE. 2021;(1):34-38. (In Russ.) https://doi.org/10.35627/2219-5238/2021-334-1-34-38