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The effect of Rhesus status on first-trimester pregnancy screening markers free β human chorionic gonadotropin,pregnancy-associated plasma protein-A and nuchal translucency |
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| Authors: | Nicholas J Cowans Anastasia Stamatopoulou Kevin Spencer |
| Institution: | Prenatal Screening Unit, Department of Clinical Biochemistry, King George Hospital, Essex IG3 8YB UK |
| Abstract: | |
| Keywords: | aneuploidy screening combined test Rhesus status free beta-hCG PAPP-A nuchal translucency |