2011-06-20
美国妇产科医师学会(ACOG,American College of Obstetricians and Gynecologists)
2011-05-01
临床系统改进协会(ICSI,Institute for Clinical Systems Improvement)
2011-02-01
英国皇家妇产科医师学院(RCOG,Royal College of Obstetricians and Gynaecologists)
2010-08-20