OC179: The naso-fronto-maxilla index: a potential new marker of trisomy 21 cases with present nasal bone in the second trimester
2011 ◽
Vol 2011
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pp. 133-135
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2007 ◽
Vol 30
(3)
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pp. 271-274
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2005 ◽
Vol 193
(6)
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pp. S149
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2010 ◽
Vol 37
(4)
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pp. 444-449
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