<qa>  What must WCBP agree to have pregnancy tests every week for the first 4 weeks of treatment10. WCBP must agree to have pregnancy tests every week for the first 4 weeks of treatment, then every 4 weeks if her menstrual cycles are regular or every 2 weeks if her cycles are irregular, while on study drug, and 4 weeks after the last dose of study drug. Men must agree not to father a child and agree to use a condom if his partner is of child bearing potential. 