title: Delayed speech.
mesh_terms: D002675:Child, Preschool; D006311:Hearing Disorders / Q000150:complications; D006320:Hearing Tests; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007804:Language Development; D013064:Speech Disorders / Q000175:diagnosis / Q000209:etiology / Q000523:psychology