[Occurrence of otitis media in early childhood].
D000367:Age Factors; D002675:Child, Preschool; D003604:Czechoslovakia; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D010033:Otitis Media / Q000453:epidemiology*
K výskytu zánĕtu stredního ucha u dĕtí raného vĕku.