For citations:

Isaev R.I., Strajesko I.D., Vorobyeva N.M., Mkhitaryan E.A., Tkacheva O.N., Yakhno N.N. Low vitamin D level increases risk of dementia in institutionalized centenarian. Russian Journal of Geriatric Medicine. 2021;(2):262. (In Russ.) https://doi.org/10.37586/2686-8636-2-2021-252