DOI:
10.1055/s-00000089
Ultraschall in der Medizin - European Journal of Ultrasound
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References
Quezada MS, Gil MM, Francisco C. et al.
Screening for trisomies 21, 18 and 13 by cell-free DNA analysis of maternal blood at 10–11 weeks’ gestation and the combined test at 11–13 weeks.
Ultrasound Obstet Gynecol 2015;
45: 36-41
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