- All men of reproductive potential and women of child-bearing potential (WOCBP) must agree to practice effective contraception (iud, birth control pill, latex condoms, diaphragm) during the entire study period and for one month after the study ends, unless documentation of infertility exists. Should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately. WOCBP are women who are not menopausal for 12 months or no previous surgical sterilization."