title: [Pneumonia in children in Poland 1970-1981].
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011014:Pneumonia / Q000453:epidemiology* / Q000401:mortality; D011044:Poland; D012737:Sex Factors
vernacular_title: Zapalenie płuc u dzieci w Polsce w latach 1970-1981.