Anal size in constipated and non-constipated children.
D000293:Adolescent; D000367:Age Factors; D001003:Anal Canal / Q000033:anatomy & histology / Q000473:pathology*; D002648:Child; D002675:Child, Preschool; D003248:Constipation / Q000473:pathology*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male