For citations:

Popova O.P., Mazankova L.N., Skirda T.A., Bunin S.V., Vlasov E.V. Clinical and diagnostic features of pertussis in older children. Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics). 2019;64(4):70-75. (In Russ.) https://doi.org/10.21508/1027-4065-2019-64-4-70-75