The child with a marked high-frequency hearing impairment.
D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D004519:Education, Special; D006311:Hearing Disorders / Q000145:classification / Q000151:congenital / Q000209:etiology / Q000628:therapy; D006320:Hearing Tests; D006801:Humans; D007223:Infant; D007804:Language Development; D012204:Rh-Hr Blood-Group System; D013016:Sound; D013060:Speech
D012204:Rh-Hr Blood-Group System