title: Gray-scale ultrasonography: the liver and biliary tract in cystic fibrosis.
mesh_terms: D000293:Adolescent; D000328:Adult; D001659:Biliary Tract / Q000000981:diagnostic imaging*; D002648:Child; D002675:Child, Preschool; D003550:Cystic Fibrosis / Q000000981:diagnostic imaging*; D006801:Humans; D007223:Infant; D008099:Liver / Q000000981:diagnostic imaging*; D011859:Radiography; D014463:Ultrasonography