Cluster 13: dose therapy study male starting method contraception agree adequate use 
Cluster 262: method contraception barrier use effective childbearing potential willing discontinuation females 
Cluster 322: effective contraception use agree sterile patients surgically fertile study dose 
Cluster 493: highly effective contraception study use male female methods period potential 
Cluster 825: reproductive contraception potential effective use agree female study method male 
Cluster 930: contraception use adequate method agree study male duration willing agrees 
Cluster 1026: fcbp lenalidomide pregnancy effective method days agree commit begin starts 
Cluster 1633: female childbearing potential male contraception partners use effective patients agree 
Cluster 1712: contraceptive use study agree potential effective methods method dose childbearing 
Cluster 2036: avoidance producing measures child agree male contraception potential female use