1. World Health Organization. Mechanism of action, safety, and efficacy of intrauterine devices. Technical Report Series 753. World Health Organization, 1987.
2. Cates W, Grimes DA, Ory HW, Tyler CW. Publicity and the public health: the elimination of IUD-related abortion deaths. Fam Plann Perspect. 1977;9:138–40.
3. Pollack AE, Girvin S. When should an IUD be removed and replaced? Med Aspects Hum Sex. 1991;26(2):46–58.
4. Edelman DA, Berger GS, Keith L. The use of IUDs and their relationship to pelvic inflammatory disease: a review of epidemiologic and clinical studies. Curr Probl Obstet Gynecol. 1982;6(3):1–62.
5. Grimes DA. Intrauterine devices and pelvic inflammatory disease; recent developments. Contraception. 1987;36:97–109.