DOI:
10.1055/s-00000089
Ultraschall in der Medizin - European Journal of Ultrasound
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References
Kagan KO, Eiben B, Kozlowski P.
Combined first trimester screening and cell-free fetal DNA – “next generation screening”.
Ultraschall in der Medizin (Stuttgart, Germany: 1980) 2014;
35: 229-236
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