title: Upper age limit for bronchiolitis: 12 months or 6 months?
authors.forename: M
authors.initials: M
authors.lastname: Korppi
authors.forename: P
authors.initials: P
authors.lastname: Koponen
authors.forename: K
authors.initials: K
authors.lastname: Nuolivirta
mesh_terms: D001249:Asthma / Q000453:epidemiology* / Q000821:virology*; D001988:Bronchiolitis / Q000453:epidemiology* / Q000821:virology*; D005260:Female; D006801:Humans; D008297:Male; D010850:Picornaviridae Infections / Q000453:epidemiology*; D012229:Rhinovirus / Q000302:isolation & purification*