2. if sexual active, practicing an effective method of birth control such as hormonal prescription oral contraceptives, progesterone implants or injections, contraceptive patch, intrauterine device, or maintenance of a monogamous relationship with a male partner who has been surgically sterilized by vasectomy. A double barrier method such as condoms, diaphragms, or cervical caps with spermicidal foam, cream, or gel may be used as a method of birth control