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First trimester screening for Down syndrome using nuchal translucency,maternal serum pregnancy-associated plasma protein A,free-β human chorionic gonadotrophin,placental growth factor,and α-fetoprotein |
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| Authors: | Tianhua Huang Alan Dennis Wendy S Meschino Shamim Rashid Ellen Mak-Tam Howard Cuckle |
| Institution: | 1. Genetics Program, North York General Hospital, Toronto, Ontario, Canada;2. Genetics Program, North York General Hospital, Toronto, Ontario, Canada
Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada;3. Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY, USA |
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