 - Women of childbearing potential not surgically sterile or 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 discontinuation of study drug. Acceptable methods of contraception include intrauterine device IUD known to have a failure rate of less than 1 per year, steroidal contraceptive oral, implanted, transdermal, or injected, barrier method with spermicide, abstinence, and partner vasectomy. 