For citations:

Zhernakova NI, Lebedev DT, Lebedev TY, Kosov MA. Impact of loneliness on mental and clinical status in elderly patients with cardiovascular disease. Primary Health Care (Russian Federation). 2025;2(4):105-111. (In Russ.) https://doi.org/10.15829/3034-4123-2025-92. EDN: UJPTEM