DOI:
10.1055/s-00000089
Ultraschall in der Medizin - European Journal of Ultrasound
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References
Cicero S, Rembouskos G, Vandecruys H. et al.
Likelihood ratio for trisomy 21 in fetuses with absent nasal bone at the 11 - 14-week scan.
Ultrasound Obstet Gynecol 2004; 23: 218-223
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