title: [Epidemiology of acute pneumonias in children and the role of premorbid factors in their occurrence].
mesh_terms: D000208:Acute Disease; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D011014:Pneumonia / Q000453:epidemiology* / Q000209:etiology; D012141:Respiratory Tract Infections / Q000150:complications; D014586:USSR; D014777:Virus Diseases / Q000150:complications
vernacular_title: Epidemiologiia ostrykh pnevmoniĭ u deteĭ i rol' premorbidnykh faktorov v ikh vozniknovenii.