Duodenal fluid pH in cystic fibrosis.
D002648:Child; D002675:Child, Preschool; D003550:Cystic Fibrosis / Q000503:physiopathology*; D004386:Duodenum; D005215:Fasting; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007223:Infant; D007419:Intestinal Secretions / Q000032:analysis*; D011199:Potentiometry