title: [Clinical picture of the 1971 influenza outbreak on the basis of hospital observation of 60 patients].
mesh_terms: D000328:Adult; D000368:Aged; D004196:Disease Outbreaks / Q000453:epidemiology*; D005260:Female; D006333:Heart Failure / Q000209:etiology; D006801:Humans; D007251:Influenza, Human / Q000150:complications* / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D011014:Pneumonia / Q000209:etiology; D011044:Poland
vernacular_title: Obraz kliniczny grypy w czasie epidemii 1971 r. na podstawie obserwacji szpitalnej 60 chorych