DOI: 10.1055/s-00000089

Ultraschall in der Medizin - European Journal of Ultrasound

References

Rosen DJ, Kedar I, Amiel A. et al.
A negative second trimester triple test and absence of specific ultrasonographic markers may decrease the need for genetic amniocentesis in advanced maternal age by 60 %. 
Prenat Diagn 2002; 22: 59-63  

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