Nature of stuttering in a mentally retarded population.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000407:Alabama; D002648:Child; D003071:Cognition; D006801:Humans; D008607:Intellectual Disability / Q000150:complications*; D008875:Middle Aged; D013060:Speech; D013342:Stuttering / Q000150:complications* / Q000175:diagnosis / Q000453:epidemiology