For citations:
Kurdup M.K., Fisenko A.P., Davydova I.V., Zhuzhula A.A., Alyabieva N.M., Basargina E.N. Pneumococcal Immunization in Young Children with Chronic Heart Failure. PEDIATRICS. 2023;22(3):15-21. (In Russ.) https://doi.org/10.31550/1727-2378-2023-22-3-15-21