14. Women of childbearing potential [defined as sexually mature women who have not undergone hysterectomy or who have not been naturally postmenopausal for at least 24 consecutive months (i.e. who have had menses any time in the preceding 24 consecutive months)] and men, not agreeing to use adequate contraception (e.g., hormonal or barrier method of birth control or abstinence) prior to study entry (after signing the ICD), during the period of study participation and for at least 4 weeks after withdrawal from the study, unless they are surgically sterilized