For citations:

Markovskaya A.I., Potapova N.L., Gaymolenko I.N., Mizernitskiy Yu.L. Bronchial obstruction in pre-school children. Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics). 2021;66(6):17-22. (In Russ.) https://doi.org/10.21508/1027-4065-2021-66-6-17-22