DOI:
10.1055/s-00000089
Ultraschall in der Medizin - European Journal of Ultrasound
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References
Le ConteG, Letourneau A, Jani J. et al.
Cell-free fetal DNA analysis in maternal plasma as a screening test for trisomy 21, 18 and 13 in twin pregnancies.
Ultrasound Obstet Gynecol 2017;
DOI: 10.1002/uog.18838.
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