Appropriate follow up to detect potential adverse events after initiation of select contraceptive methods: a systematic review.

After a woman initiates certain methods of contraception [e.g., hormonal methods, intrauterine devices (IUDs)], she is generally asked to return at some interval for a follow-up visit; however, is it unclear whether follow up is needed, what an appropriate follow-up schedule is and what should be done at follow-up visits.