作者单位:
Cantonal Hosp Winterthur, Dept Gynecol & Obstet, CH-8401 Winterthur, Switzerland
[1]
Univ Basel Hosp, Dept Gynecol & Obstet, CH-4031 Basel, Switzerland
[2]
Cantonal Hosp Baselland, Dept Gynecol & Obstet, CH-4410 Liestal, Switzerland
[3]
Univ Zurich, Epidemiol Biostat & Prevent Inst, Div Chron Dis Epidemiol, CH-8001 Zurich, Switzerland
[4]
Spital Grabs, Dept Gynecol & Obstet, CH-9472 Grabs, Switzerland
[5]
发布时间
2017-04-05