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First-trimester screening for trisomy 21 in twin pregnancy: does the addition of biochemistry make an improvement? |
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| Authors: | Anna Goncé Antoni Borrell Albert Fortuny Elena Casals M Angels Martínez Imma Mercadé Vicenç Cararach Joan Antoni Vanrell |
| Institution: | 1. Prenatal Diagnosis Unit, Institute of Gynecology, Obstetrics and Neonatology, Hospital Clínic, University of Barcelona Medical School, Barcelona, Catalonia, Spain;2. Department of Biochemistry, Biomedical Diagnosis Center, University of Barcelona Medical School, Barcelona, Catalonia, Spain |
| Abstract: | |
| Keywords: | twins first-trimester screening trisomy 21 nuchal translucency Combined Test |