缺失或缩短的鼻骨长度和中期妊娠胎儿患唐氏综合症的检测。

Absent or shortened nasal bone length and the detection of down syndrome in second-trimester fetuses.

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缺失或缩短的鼻骨长度和中期妊娠胎儿患唐氏综合症的检测。

Absent or shortened nasal bone length and the detection of down syndrome in second-trimester fetuses.

youdao