Stability of velopharyngeal competency.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D002972:Cleft Palate / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D010160:Palate, Soft / Q000502:physiology*; D010614:Pharynx / Q000502:physiology*; D013060:Speech; D014681:Velopharyngeal Insufficiency / Q000503:physiopathology