Prenatal ultrasonographic findings in 20 fetuses with trisomy 21
ZHAO Fan-gui1, ZHANG Yue-ping2, REN Yun-yun1, KONG Fan-bin1△
Fudan University Journal of Medical Sciences ›› 2014, Vol. 41 ›› Issue (06) : 795-797.
Prenatal ultrasonographic findings in 20 fetuses with trisomy 21
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