- If a woman, capable of becoming pregnant, agrees to have pregnancy testing performed at screening (must be negative) and agrees to use a medically acceptable form of birth control (intrauterine device, birth control pill, patch or subcutaneous implant, condoms, diaphragm, and abstinence) throughout the study duration and for at least one week prior to and one week after completion of the study. Women considered capable of becoming pregnant include all females who have experienced menarche and who have not experienced menopause (as defined by amenorrhea for greater than 12 consecutive months) or have not undergone successful surgical sterilization (hysterectomy, bilateral tubal ligation, or bilateral oophorectomy).