title: Thickening of the internal anal sphincter in idiopathic constipation in children.
authors.affiliation: Great Ormond Street Children's Hospital, London WC1N 3JH, UK. ali.keshtgar@ntlworld.com
authors.forename: Alireza S
authors.initials: AS
authors.lastname: Keshtgar
authors.forename: Harry C
authors.initials: HC
authors.lastname: Ward
authors.forename: Graham S
authors.initials: GS
authors.lastname: Clayden
authors.forename: Ahmad
authors.initials: A
authors.lastname: Sanei
mesh_terms: D000293:Adolescent; D001003:Anal Canal / Q000000981:diagnostic imaging / Q000473:pathology*; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D003248:Constipation / Q000473:pathology*; D019160:Endosonography; D005260:Female; D006801:Humans; D008297:Male; D008365:Manometry; D011446:Prospective Studies