Zinatullina, A.M., Melnik, V.P. and Zimina, A.A. 2021. Personal factors of biological aging in working and non-working respondents in late maturity period. International journal of health sciences. 5, 3 (Dec. 2021), 639–648. DOI:https://doi.org/10.53730/ijhs.v5n3.2790.