Objective to explore the main reasons in disabled with mental retardation in Anding district of Gansu province, in order to proposed effective measures to prevent mental retardation.
目的分析甘肃安定区智力低下人群主要致残原因，提出预防智力低下的有效措施。
Objective to explore the main reasons in disabled with mental retardation in Anding district of Gansu province, in order to proposed effective measures to prevent mental retardation.
目的分析甘肃安定区智力低下人群主要致残原因，提出预防智力低下的有效措施。
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