women contraception men childbearing potential use adequate unwilling pregnant study 
contraceptive use potential effective reproductive method study methods men agreed 
contraception methods intrauterine barrier device method use condom potential effective 
surgically childbearing sterile potential abstain heterosexual activity sterilized study subjects 
contraception use effective agree potential study childbearing male method female 
fcbp agree contact sexual vasectomy condom latex successful potential lenalidomide 
birth control potential effective use study method agree childbearing women 
bilateral hysterectomy oophorectomy potential consecutive postmenopausal months childbearing tubal undergone