DOI:
10.1055/s-00000089
Ultraschall in der Medizin - European Journal of Ultrasound
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References
Wald NJ, White N, Morris JK. et al.
Serum markers for Down's syndrome in women who have had in vitro fertilisation: implications for antenatal screening.
Br J Obstet Gynaecol 1999;
106: 1304-1306
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