Sign and oral language development of preschool hearing children of deaf parents in comparison with their mothers' communication system.
D002675:Child, Preschool; D003638:Deafness / Q000523:psychology*; D005260:Female; D006801:Humans; D007223:Infant; D007804:Language Development; D008297:Male; D008369:Manual Communication; D009034:Mother-Child Relations; D012813:Sign Language