The effect of a 'vanishing twin' on biochemical and ultrasound first trimester screening markers for Down's syndrome in pregnancies conceived by assisted reproductive technology
2009 ◽
Vol 2009
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pp. 34-35
Keyword(s):
Keyword(s):
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1997 ◽
Vol 17
(9)
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pp. 821-829
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Keyword(s):
2001 ◽
Vol 76
(6)
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pp. 1282-1283
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2008 ◽
Vol 32
(5)
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pp. 612-617
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2015 ◽
Vol 189
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pp. 13-18
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