title: Risk factors of complicated H1N1 influenza in hospitalized Italian children.
authors.forename: Elena
authors.initials: E
authors.lastname: Bozzola
authors.forename: Andrzej
authors.initials: A
authors.lastname: Krzysztofiak
authors.forename: Laura
authors.initials: L
authors.lastname: Lancella
authors.forename: Alberto
authors.initials: A
authors.lastname: Tozzi
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002170:Canada / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D015897:Comorbidity; D004196:Disease Outbreaks; D005260:Female; D006760:Hospitalization; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000150:complications* / Q000453:epidemiology* / Q000473:pathology / Q000821:virology; D007558:Italy / Q000453:epidemiology; D008297:Male; D012140:Respiratory Tract Diseases / Q000453:epidemiology* / Q000209:etiology* / Q000821:virology