DOI:
10.1055/s-00000142
Frauenheilkunde up2date
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References
Sarno L, Revello R, Hanson E. et al.
Prospective first-trimester screening for trisomies by cell-free DNA testing of maternal blood in twin pregnancy.
Ultrasound Obstet Gynecol 2016;
47: 705-711
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