DOI:
10.1055/s-00000020
Geburtshilfe und Frauenheilkunde
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References
Saari-Kemppainen A, Karjaleinen O, Ylosralo P, Heinonen OP.
Ultrasound screening and perinatal mortality: Controlled trial of systematic one-stage screening in pregnancy. The Helsinki Ultrasound Trial.
Lancet 1990; 336: 387-391
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