title: [Action of a human placenta extract used for prevention of recurring respiratory infections].
mesh_terms: D001991:Bronchitis / Q000517:prevention & control*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D010924:Placental Extracts / Q000627:therapeutic use*; D012141:Respiratory Tract Infections / Q000517:prevention & control*
chemical_list: D010924:Placental Extracts
vernacular_title: Sulla azione di un preparato d'estrazione placentare umano usato per la profilassi delle infezioni respiratorie recidivanti.