4[2]World Health Organization.Emergency Contraception,Fact Sheet,No 244[R].2000. 被引量：1
5[3]Jackson R,Schwarz EB,Freedman L,Darney P.Knowledge and willingness to use emergency contraception among low-income postpartum women[J].Contraception,2000,61 (6):351-357. 被引量：1
6[4]Gray RH,Campbell OM,Zacur HA,et al.Postpartum return of ovarian activity in nonbreastfeeding women monitored by urinary assays[J].J Clini Endocrinl Metabl,1987,64(4):645-50. 被引量：1
8[8]Delbanco SF,Mauldon J,Smith MD.Little knowledge and limited practice:emergency contraceptive pills,the public,and the obstetrician-gynecologist[J].Obstet Gynecol,1997,89:1 006-1 011. 被引量：1
9[11]Gorge J,Turner J,Cooke E.Women's knowledge of emergency contraception.Br J Gen Pract,1997,26(2):145-152. 被引量：1
10[12]Harper CC & Ellertson CE:The emergency contraception pill:A survey of knowledge and attitudes among students at Princeton University.Am J Obstet Gynecol,1995,173(5):1 438. 被引量：1
