DOI:
10.1055/s-00000020
Geburtshilfe und Frauenheilkunde
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References
Nicolaides KH, Azar G, Byrne D, Mansur C, Marks K.
Fetal nuchal translucency: ultrasound screening for chromosomal defects in first trimester of pregnancy.
BMJ 1992; 304: 867-869
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