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一、资料与方法研究对象:选取2006年10月至2009年10月在我院行产前彩色多普勒超声检查发现胎儿肢体缺失的孕妇18例;产前超声检查未发现胎儿肢体缺失,出生或
Materials and Methods Subjects: 18 pregnant women with missing fetal limbs were selected from prenatal color Doppler ultrasound examinations in our hospital from October 2006 to October 2009. Prenatal ultrasound showed no fetal limb loss and was born or