作者单位:
Univ Calif San Francisco, San Francisco Gen Hosp, Inst Global Orthopaed & Traumatol, San Francisco
[1]
Johns Hopkins Univ Hosp, Dept Gynecol & Obstet, Baltimore, MD 21287 USA
[2]
Johns Hopkins Bloomberg Sch Publ Hlth, Dept Int Hlth, Baltimore, MD USA
[3]
Connaught Hosp, Dept Surg, Freetown, Sierra Leone
[4]
Med Coll Wisconsin, Inst Hlth & Soc, Milwaukee, WI 53226 USA
[5]
Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA 94720 USA
[6]
发布时间
2015-04-10