First-Trimester Ductus Venosus, Nasal Bones, and Down Syndrome in a High-Risk Population
2005 ◽
Vol 105
(6)
◽
pp. 1348-1354
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2000 ◽
Vol 95
(6, Part 1)
◽
pp. 889-894
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Keyword(s):
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2007 ◽
Vol 197
(6)
◽
pp. S52
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1997 ◽
Vol 176
(1)
◽
pp. S10
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