Browsing by Author "c0bece56-123c-48eb-9b89-8ff78e61f940"

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Prospective study evaluating performance of first-trimester combined screening for trisomy 21 using repeat sampling of maternal serum markers PAPP-A and free β-hCG.

Ekelund, C; Wright, D; Ball, S; Kirkegaard, I; Nørgaard, P; Sørensen, S; Friis-Hansen, L; Jørgensen, FS; Tørring, N; Bech, BH; Petersen, OB; Tabor, A (England, 2012-09)

OBJECTIVE: To prospectively evaluate the performance of first-trimester combined screening for trisomy 21 using the biochemical markers pregnancy-associated plasma protein-A (PAPP-A) and free beta-human chorionic gonadotropin ...