For citations:
Tsarkova S.A., Abdullaev A.N., Surovceva D.A., Pomazkina A.V. Pneumonia with negative chest radiography in early childhood: is it a real phenomenon or diagnostic error? Russian Pediatric Journal. 2020;1(2):31-37. (In Russ.) https://doi.org/10.15690/rpj.v1i2.2091