Dr Stephanie Devaney, who led the work at the National Institutes of Health in Bethesda, said the blood tests could be useful in clinical Settings to aid early detection.

贝塞斯达国立卫生研究院的斯蒂芬妮·德瓦尼医生说，临床上，血液检验方式对初期的胎儿检测大有帮助。

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Devaney was appointed by President Obama to serve as chairman of the Recovery Board.

WHITEHOUSE: Recovery Act Accountability and Transparency

The Tykes levelled when Stephen Foster headed home Martin Devaney's cross and, although Liverpool poured forward, they could not beat Steele on his debut.

BBC: Liverpool 1-2 Barnsley

Twelve Inspectors General from various federal agencies serve with Chairman Devaney.

WHITEHOUSE: Recovery Act Accountability and Transparency