P01.04: Nasal bone assessment in first trimester detection of trisomy 21
2015 ◽
Vol 36
(S 01)
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Keyword(s):
2005 ◽
Vol 192
(4)
◽
pp. 1107-1111
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Keyword(s):
Keyword(s):
2007 ◽
Vol 196
(1)
◽
pp. e19
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