First trimester screening for Down's syndrome after assisted reproductive technology: non-male factor infertility is associated with elevated free beta-human chorionic gonadotropin levels at 10–14 weeks of gestation
2008 ◽
Vol 90
(4)
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pp. 1206-1210
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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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2011 ◽
Vol 38
(3)
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pp. 309-313
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2014 ◽
Vol 41
(1)
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pp. 69-76
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2008 ◽
Vol 32
(5)
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pp. 612-617
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1994 ◽
Vol 62
(2)
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pp. 333-338
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2009 ◽
Vol 2009
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pp. 34-35
2018 ◽
Vol 7
(4)
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pp. 678-685
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