For citations:

Letifov G.M., Boiko N.V., Stagnieva I.V., Lukashevich Yu.N. The effectiveness of pneumococcal vaccination and dynamics of acute otitis media incidence in children. Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics). 2019;64(5):91-96. (In Russ.) https://doi.org/10.21508/1027-4065-2019-64-5-91-96