For citations:
Portugal P.M. Cough: a pediatric symptom in the practice of a pediatric surgeon. Russian Pediatric Journal. 2025;28(2S):51. (In Russ.) EDN: hoxsbf
Portugal P.M. Cough: a pediatric symptom in the practice of a pediatric surgeon. Russian Pediatric Journal. 2025;28(2S):51. (In Russ.) EDN: hoxsbf