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First Trimester Screening for Trisomy 21 by Maternal Age, Nuchal Translucency and Fetal Nasal Bone in Unselected Pregnancies | IntechOpen
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Table 1 from Nuchal translucency in normal fetus and its variation with increasing crown rump length (CRL) and gestational age. | Semantic Scholar
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Table 2 from First-trimester Down's syndrome screening by fetal nuchal translucency measurement in Taiwan. | Semantic Scholar
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Four years experience of first‐trimester nuchal translucency screening for fetal aneuploidies with increasing regional availability - Wayda - 2001 - Acta Obstetricia et Gynecologica Scandinavica - Wiley Online Library
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