<qa>  What is the name of the subject who is surgically sterile?- Subjects with reproductive potential must be willing to use, in combination with hisher partner, 2 highly effective methods of effective contraception or practice sexual abstinence throughout the study and continue for 5 months after the study duration. Subjects who are surgically sterile e.g. history of bilateral tubal ligation, hysterectomy or whose sexual partner is sterile e.g. history of vasectomy are not required to use additional contraceptive measures. 