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Effect on down syndrome screening performance of adjusting for marker levels in a previous pregnancy |
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| Authors: | Nicholas J. Wald Isobel M. Barnes Ruthie Birger Wayne Huttly |
| Affiliation: | Wolfson Institute of Preventive Medicine, Barts and The London Queen Mary's School of Medicine and Dentistry, Charterhouse Square, London, EC1M 6BQ UK |
| Abstract: | |
| Keywords: | down syndrome screening false-positive result screening performance prenatal screening recurrent false-positive |