5 077例孕妇孕中期产前筛查结果分析
LABORATORY MEDICINE AND CLINIC（2009）
Abstract
三体综合征6例、21-三体综合征3例.结论 孕中期母体血清AFP、Freeβ-HCG测定是一种无创性检测手段,可以大大降低先天性缺陷儿的出生率.
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