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Unconjugated estriol values between 14 and 22 weeks of gestation in relation to prenatal screening for Down syndrome |
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| Authors: | Jonathan P Bestwick Wayne J Huttly Nicholas J Wald |
| Institution: | Wolfson Institute of Preventive Medicine, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, UK |
| Abstract: | |
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