Fertile men must practice effective contraceptive methods during the study period, unless documentation of infertility exists Fertile men must practice effective contraceptive methods during the study period, unless documentation of infertility exists Fertile men must practice effective contraceptive methods during the study, unless documentation of infertility exists Fertile men must practice effective contraceptive methods during the study, unless documentation of infertility exists Fertile men must practice effective contraceptive methods during the study, unless documentation of infertility exists Fertile men must practice effective contraceptive methods during the study, unless documentation of infertility exists Fertile men must practice effective contraceptive methods during the study, unless documentation of infertility exists Fertile men must practice effective contraceptive methods during the study period, unless documentation of infertility exists Men must practice effective contraceptive methods during the study, unless documentation of infertility exists Fertile men must practice effective contraceptive methods during the study, unless documentation of infertility exists Fertile men must practice effective contraceptive methods during the study, unless documentation of infertility exists Fertile men must practice effective contraceptive methods during the study, unless documentation of infertility exists