For citations:
Isaev R.I., Vorobyeva N.M., Mkhitaryan E.A., Marahovskaya E.A., Tkacheva O.N. Associations between vitamin D and depression in institutionalized oldest old. Russian Journal of Geriatric Medicine. 2024;(2):77-85. (In Russ.) https://doi.org/10.37586/2686-8636-2-2024-77-84