·2,447,543篇论文数据，部分数据来源于NoteExpress
结论：主要的高危因素在产前及产时，缺氧性因素是主因，特别是宫内的慢性缺氧，是影响小儿智能发育的主要因素。
Conclusion: Main high risk factors lie in antepartum and intrapartum. It is anoxia that major cause to affect child's intelligence development, especially chronic hypoxia in uterus.
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