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Improved performance of first-trimester combined screening for trisomy 21 with the double test taken before a gestational age of 10 weeks |
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| Authors: | Ida Kirkegaard Olav Bjørn Petersen Niels Uldbjerg Niels Tørring |
| Institution: | 1. Department of Obstetrics and Gynecology, Aarhus University Hospital, Skejby, Aarhus, Denmark;2. Department of Clinical Biochemistry, Aarhus University Hospital, Skejby, Aarhus, Denmark |
| Abstract: | |
| Keywords: | first-trimester screening trisomy 21 Down syndrome double test consecutive combined test |