Two-stage first-trimester screening for trisomy 21 by ultrasound assessment and biochemical testing
2010 ◽
Vol 36
(5)
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pp. 542-547
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Keyword(s):
2005 ◽
Vol 25
(3)
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pp. 221-226
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Keyword(s):
2004 ◽
Vol 104
(4)
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pp. 661-666
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Keyword(s):
Keyword(s):
2005 ◽
Vol 192
(4)
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pp. 1107-1111
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Keyword(s):
Keyword(s):
2009 ◽
Vol 201
(6)
◽
pp. S38
Keyword(s):
2009 ◽
Vol 33
(4)
◽
pp. 387-393
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Keyword(s):