用多种选择性血清再吸收抑制剂治疗经前综合症已经引起了一些争议。
The use of multiple SSRI's to treat PMS has caused some controversy.
他们认为，放松筛选严格性是一种母体的选择性反应，这可以解释唐氏综合症发病率随母亲年龄增长而升高的原因。
They believe that this relaxed filtering stringency is an adaptive maternal response and it might explain why the rate of Down Syndrome accelerates with increasing maternal age.
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