DOI:
10.1055/s-00030576
Revista Brasileira de Ginecologia e Obstetrícia / RBGO Gynecology and Obstetrics
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References
De Biasio P, Siccardi M, Volpe G, Famularo L, Santi F, Canini S.
First-trimester screening for Down syndrome using nuchal translucency measurement with free beta-hCG and PAPP-A between 10 and 13 weeks of pregnancy--the combined test.
Prenat Diagn 1999;
19 (04) 360-363 . Doi: 10.1002/(SICI)1097-0223(199904)19:4<360:AID-PD556>3.0.CO;2-U
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