First-trimester combined ultrasound and biochemical screening for Down syndrome in routine clinical practice
Keyword(s):
1996 ◽
Vol 16
(7)
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pp. 675-676
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Keyword(s):
Keyword(s):
2006 ◽
Vol 28
(4)
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pp. 362-363
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2007 ◽
Vol 114
(4)
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pp. 493-497
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2000 ◽
Vol 20
(10)
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pp. 785-789
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