 - if a woman of childbearing potential not surgically sterile or who are not 2 years postmenopausal, must use a medically accepted method of contraception and must agree to continue use of this method for the duration of the study and for 30 days after participation in the study. Acceptable methods of contraception include abstinence, barrier method with spermicide, intrauterine device IUD, or steroidal contraceptive oral, transdermal, implanted, and injected in conjunction with a barrier method. 