A comparison of the impact of screen-positive results obtained from ultrasound and biochemical screening for Down syndrome in the first trimester: a pilot study

Weinans, Martin J. N. ; Kooij, Loes ; Müller, Moira A. ; Bilardo, Katia M. ; van Lith, Jan M. M. ; Tymstra, Tjeerd

Prenatal diagnosis, 2004-05, Vol.24 (5), p.347-351 [Periódico revisado por pares]

Chichester, UK: John Wiley & Sons, Ltd

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