204: Utilization of a 1/1000 cutoff in combined screening for Down syndrome (DS) in younger AMA patients provides cost advantages compared with NIPS

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• 作者：David Krantz ; Terrence Hallahan ; Jonathan Carmichael ; Mark Evans
• 刊名：American Journal of Obstetrics and Gynecology
• 出版年：January, 2014
• 年：2014
• 卷：210
• 期：1_supp_S
• 页码：S111
• 全文大小：323 K

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