作者单位：
Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
[1]
Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
[2]
Quintiles, Inc., 6700 W 115th St., Overland Park, KS 66211, USA
[3]
发布时间
2013-11-20
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