Objective:To find out the significance of fragile X mentalretardation on diagnostic etiology of inherent mentalretardation(MR).
目的:探讨脆性X综合征对先天智力低下儿童病因学诊断的重要性。
2
Objective To explore social and cultural factors which related to child mentalretardation (MR), and study quantitatively mechanism between factors and the disease.
目的从可能引发MR的社会文化因素进行探讨, 并对其与该病发生的关系进行定量研究。
3
Objective to determine the biomedical factors of mentalretardation (MR) children in investigation stations Ningqiang, Zhashui and Ankang in Qinba mountainous region.