作者单位：
Department of Statistics, Stanford University, Stanford, CA 94305, United States
[1]
Division of Research, Kaiser Permanente, Oakland, CA 94612, United States
[2]
Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San
[3]
Department of Obstetrics and Gynecology, School of Medicine, Stanford University, 265 Campus Drive
[4]
发布时间
2013-11-20
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