DOI: 10.1055/s-00000089

Ultraschall in der Medizin - European Journal of Ultrasound

References

Chasen ST, McCullough LB, Chervenak FA.
Is nucheal translucency screening associated with different rates of invasive testing in an older obstetric population? 
Am J Obstet Gynecol 2004; 190: 769-774  

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