title: Birth season, respiratory viruses and asthma in children.
authors.forename: Eija
authors.initials: E
authors.lastname: Piippo-Savolainen
authors.forename: Matti
authors.initials: M
authors.lastname: Korppi
mesh_terms: D001249:Asthma / Q000453:epidemiology*; D001990:Bronchiolitis, Viral / Q000453:epidemiology; D002675:Child, Preschool; D006801:Humans; D012135:Respiratory Sounds; D018357:Respiratory Syncytial Virus Infections / Q000453:epidemiology; D012307:Risk Factors; D012621:Seasons