<qa>  What is a sexually mature woman who has not undergone a hyster16. Men must agree to use a latex condom during sexual contact with a female of childbearing potential FCBP even if they have had a successful vasectomy. A FCBP is a sexually mature woman who: 1 has not undergone a hysterectomy or bilateral oophorectomy; or 2 has not been naturally postmenopausal for at least 24 consecutive months i.e., has had menses at any time in the preceding 24 consecutive months. 