作者单位：
Department of Obstetrics and Gynecology, Washington Hospital Center, Washington, DC, United States
[1]
Department of Geriatric Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
[2]
Department of Obstetrics and Gynecology, Loyola University Chicago, Chicago, IL, United States
[3]
Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
[4]
Department of Biostatistics, University of Michigan, Ann Arbor, MI, United States
[5]
Department of Obstetrics and Gynecology, University of Iowa, Iowa, IA, United States
[6]
发布时间
2014-03-27
换一批
