Validation of First Trimester Screening for Trisomy 21 in Singapore with Reference to Performance of Nasal Bone
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2005 ◽
Vol 192
(4)
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pp. 1107-1111
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2007 ◽
Vol 196
(1)
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pp. e19
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2007 ◽
Vol 2007
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pp. 6-8
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Keyword(s):
2008 ◽
Vol 199
(5)
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pp. 521.e1-521.e5
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2006 ◽
Vol 195
(1)
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pp. 109-114
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Keyword(s):
2010 ◽
Vol 36
(5)
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pp. 542-547
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Keyword(s):
2004 ◽
Vol 104
(4)
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pp. 661-666
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