Eventually it might replace the routine screening tests offered to all pregnant women.
最终这项检查有可能取代面向所有孕妇的常规筛查试验。
There are few or no symptoms early in the disease and no effective screening tests.
对于这些疾病早期很少或没有症状，并且无有效的筛查试验。
Some screening tests can be done at home.
一些筛查可以在家里进行。
However, most screening tests bring with them a certain amount of errors.
然而大多数的筛选测验本身会出现一些错误。
However, most screening tests bring with them a certain amount of errors.
然而大多数的筛选测验本身会出现一些错误。
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