title: Update on the United States epidemiology study.
authors.affiliation: Regional Paediatric CF Unit, St James's Hospital, Leeds, UK.
authors.forename: J M
authors.initials: JM
authors.lastname: Littlewood
mesh_terms: D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D003106:Colon / Q000473:pathology*; D003550:Cystic Fibrosis / Q000453:epidemiology* / Q000473:pathology; D005260:Female; D005355:Fibrosis; D006801:Humans; D015994:Incidence; D007223:Infant; D007415:Intestinal Obstruction / Q000209:etiology; D008297:Male; D010194:Pancreatin / Q000009:adverse effects / Q000627:therapeutic use; D014481:United States
chemical_list: D010194:Pancreatin