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abortion
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abortion
Encyclopedia
医学
〔妊娠并发症〕
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abortion
流产
在中国定义为妊娠不足28周、胎儿体重不足1000克而终止妊娠的现象。在美国定义为妊娠20周前自然丧失或终止。1977年世界卫生组织将其定义为于妊娠20周前终止,胎儿体重少于500克。
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abortion
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