For citations:
Godovalov A.P., Nikolaeva N.V., Karpunina T.I. Prevalence and Possible Causes of Infertility in the Perm Region. Epidemiology and Vaccinal Prevention. 2019;18(1):77-81. (In Russ.) https://doi.org/10.31631/2073-3046-2019-18-1-77-81
Godovalov A.P., Nikolaeva N.V., Karpunina T.I. Prevalence and Possible Causes of Infertility in the Perm Region. Epidemiology and Vaccinal Prevention. 2019;18(1):77-81. (In Russ.) https://doi.org/10.31631/2073-3046-2019-18-1-77-81