DOI:
10.1055/s-00000089
Ultraschall in der Medizin - European Journal of Ultrasound
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References
Kagan KO, Frisova V, Nicolaides KH. et al
Dose dependency between cigarette consumption and reduced maternal serum PAPP-A levels at 11 – 13 + 6 weeks of gestation.
Prenat Diagn 2007; 27: 849-853
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