Impact of bias in serum free beta-human chorionic gonadotropin and pregnancy-associated plasma protein-A multiples of the median levels on first-trimester screening for trisomy 21
2011 ◽
Vol 38
(3)
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pp. 309-313
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2008 ◽
Vol 63
(9)
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pp. 565-566
2008 ◽
Vol 31
(5)
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pp. 493-502
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2014 ◽
Vol 41
(1)
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pp. 69-76
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2008 ◽
Vol 31
(6)
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pp. 618-624
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2012 ◽
Vol 119
(4)
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pp. 410-416
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Keyword(s):
1994 ◽
Vol 31
(5)
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pp. 447-454
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2012 ◽
Vol 40
(5)
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pp. 530-535
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2008 ◽
Vol 90
(4)
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pp. 1206-1210
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