Objective To observe the effect of speech therapy on the intelligence of children with developmental retardation of speech.
目的观察言语治疗对发育迟缓儿童智力的影响。
The improved DDST intelligence examination was done on 67 cases of endemic cretinism in Qinghai through random sampling and had got developmental quotient (DQ). we found:1.
通过随机抽样对青海省67例地克病患者做改进后的DDST智能检查，取得发育商。
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