First- and second-trimester evaluation of risk for Down syndrome
- PMID: 18055745
- DOI: 10.1097/01.AOG.0000296095.69251.7f
First- and second-trimester evaluation of risk for Down syndrome
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First- and second-trimester evaluation of risk for Down syndrome.Obstet Gynecol. 2007 Jul;110(1):10-7. doi: 10.1097/01.AOG.0000263470.89007.e3. Obstet Gynecol. 2007. PMID: 17601890
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