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First-trimester Down syndrome screening using additional serum markers with and without nuchal translucency and cell-free DNA |
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| Authors: | J Johnson M Pastuck A Metcalfe G Connors R Krause D Wilson H Cuckle |
| Institution: | 1. Coordinator, Early Risk Assessment Program, Calgary, AB, Canada;2. Obstetrics and Gynecology, University of British Columbia, Vancouver, BC, Canada;3. Obstetrics and Gynecology, University of Calgary, Calgary, AB, Canada;4. Calgary Laboratory Services, Calgary, AB, Canada;5. Obstetrics and Gynecology, Columbia University Medical Center, New York, NY, USA |
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