dose therapy study male starting method contraception agree adequate use 
method contraception barrier use effective childbearing potential willing discontinuation females 
effective contraception use agree sterile patients surgically fertile study dose 
highly effective contraception study use male female methods period potential 
reproductive contraception potential effective use agree female study method male 
contraception use adequate method agree study male duration willing agrees 
fcbp lenalidomide pregnancy effective method days agree commit begin starts 
female childbearing potential male contraception partners use effective patients agree 
contraceptive use study agree potential effective methods method dose childbearing 
avoidance producing measures child agree male contraception potential female use