Women with a diagnosed EP (based on the American College of Obstetricians and Gynecologists [ACOG] Practice Bulletin[18]) who were seen in the inpatient department of gynecology of each hospital were interviewed as potential EP subjects. LDN193189 = 0.04 [0.030.05]; withdrawal method: AOR = 0.10 [0.070.13]; calendar rhythm method: AOR = 0.54 [0.400.73]; oral contraceptive pills […]