作者单位:
Univ Calif Berkeley, Sch Publ Hlth, Div Epidemiol, Berkeley, CA 94720 USA
[1]
Univ Calif Berkeley, Sch Publ Hlth, Div Biostat, Berkeley, CA 94720 USA
[2]
Univ Calif Davis, Dept Surg, Sacramento, CA 95817 USA
[3]
Karolinska Inst, Dept Med, Clin Epidemiol Unit, Stockholm, Sweden
[4]
Univ British Columbia, Dept Obstet & Gynaecol, Vancouver, BC, Canada
[5]
Univ Pittsburgh, Grad Sch Publ Hlth, Dept Epidemiol, Pittsburgh, PA 15260 USA
[6]
发布时间
2018-03-07