EP06.01: Prenasal thickness to nasal bone length ratio in normal and Trisomy 21 fetuses at 11-14 weeks of gestation
2011 ◽
Vol 39
(2)
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pp. 185-190
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2005 ◽
Vol 24
(6)
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pp. 805-810
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2003 ◽
Vol 189
(6)
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pp. S237
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2003 ◽
Vol 21
(2)
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pp. 156-160
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2015 ◽
Vol 36
(05)
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pp. 501-506
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2007 ◽
Vol 30
(3)
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pp. 271-274
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