For citations:

Durov A.M., Prokopiev N.Ya., Nazarenko M.A. Estimation of biological age in middle-age men living in the north and south of the Tyumen region. Bulletin of Siberian Medicine. 2012;11(6):191-194. (In Russ.) https://doi.org/10.20538/1682-0363-2012-6-191-194