title: [Secondary pneumonia--an old and new problem].
mesh_terms: D006801:Humans; D007511:Ischemia / Q000150:complications; D007938:Leukemia / Q000150:complications; D008168:Lung / Q000098:blood supply; D008887:Military Medicine; D011018:Pneumonia, Pneumococcal / Q000209:etiology*; D011655:Pulmonary Embolism / Q000150:complications; D014947:Wounds and Injuries / Q000150:complications
vernacular_title: Vtorichnye pnevmonii--staraia i novaia problema.