title: Vocal fundamental frequency characteristics of institutionalized Down's syndrome children.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002674:Child, Institutionalized; D004314:Down Syndrome; D005260:Female; D006801:Humans; D007361:Intelligence Tests; D008297:Male; D012737:Sex Factors; D013060:Speech; D013637:Tape Recording; D014705:Verbal Behavior; D014831:Voice