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A first trimester trisomy 13/trisomy 18 risk algorithm combining fetal nuchal translucency thickness, maternal serum free β-hCG and PAPP-A
Kevin Spencer, Kypros H. NicolaidesVolume:
22
Year:
2002
Language:
english
Pages:
3
DOI:
10.1002/pd.420
File:
PDF, 52 KB
english, 2002