867: Impact of maternal and paternal factors on fetal nasal bone visualization during first trimester screening
2019 ◽
Vol 220
(1)
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pp. S563-S564
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2005 ◽
Vol 192
(4)
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pp. 1107-1111
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2008 ◽
Vol 199
(5)
◽
pp. 521.e1-521.e5
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2007 ◽
Vol 196
(1)
◽
pp. e19
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