作者单位:
Univ Colorado, Sch Med, Dept Obstet & Gynecol, Aurora, CO USA
[1]
Univ N Carolina, Gillings Sch Global Publ Hlth, Dept Epidemiol & Nutr, Chapel Hill, NC USA
[2]
Colorado Sch Publ Hlth, Dept Epidemiol, Aurora, CO 80045 USA
[3]
Colorado Sch Publ Hlth, Dept Biostat & Informat, Aurora, CO 80045 USA
[4]
发布时间
2015-03-19