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First trimester intact hCG as an early marker of trisomy 21: a promise unrecognised? |
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| Authors: | Kevin Spencer Nicholas J Cowans Niels Uldbjerg Annie Vereecken Niels Tørring |
| Institution: | 1. Prenatal Screening Unit, Department of Clinical Biochemistry, King George Hospital, Barley Lane, Goodmayes, Essex IG3 8YB, UK;2. Department of Gynaecology and Obstetrics, Aarhus University Hospital, Skejby, Aarhus, Denmark;3. Algemeen Medisch Laboratorium, Antwerp, Belgium;4. Department of Clinical Biochemistry, Aarhus University Hospital, Skejby, Aarhus, Denmark |
| Abstract: | |
| Keywords: | aneuploidy PAPP-A free β-hCG intact hCG NT prenatal screening |