title: Prevalence and survival of patients with cystic fibrosis in Northern Ireland, 1961-1971.
mesh_terms: D002675:Child, Preschool; D003550:Cystic Fibrosis / Q000453:epidemiology* / Q000378:metabolism / Q000401:mortality; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008470:Meconium / Q000378:metabolism; D009660:Northern Ireland