REFERENCES
- James WH. Increasing rates of ectopic preganacy. Hum Reprod 1996;11:233–44.
- HMSO. Report on Confidential Enquiries into Maternal Deaths in the UK (1994–96). London: HMSO, 1998
- Stovall TG, Kellerman AL, Ling FW, et al. Emergency department diagnosis of ectopic pregnancy. Ann Emerg Med 1990;19:1098–103.
- Atrash HK, Strauss LT, Kendrick JS, et al. The relation between induced abortion and ectopic pregnancy. Obstet Gynecol 1997;89:512–18.
- Kendrick JS, Tierney EF, Lawson HW, et al. Previous caesarean delivery and the risk of ectopic pregnancy. Obstet Gynecol 1996;87:297–301.
- Parazzini F, Ferraroni M, Tozzi L, et al. Past contraceptive method use and ectopic pregnancy. Contraception 1995;52:93–8.
- Rock JA, Damario MA. Ectopic pregnancy. In Rock JA, Thompson JD, eds. Te Linde’s Operative Gynecology. Philadelphia: Lippincott-Raven, 1996:501–28.
- Hapangama D, Glasier AF, Baird DT. The effects of periovulatory administration of levonorgestrel on the menstrual cycle. Contraception 2001;63:123–9.
- Harrison-Woolrych M, Woolley J. Progestogen-only emergency contraception and ectopic pregnancy. J Fam Plan Reprod Health Care 2003;29:5–6.
- WHO Task Force on Postovulatory Methods of Fertility Regulation. Randomised controlled trial of levonorgestrel versus the Yuzpe regimen of combined oral contraceptives for emergency contraception. Lancet 1998;352:428–33.
- Lemus JF. Ectopic pregnancy: an update. Curr Opin Obstet Gynecol 2000;12:369–75.
- Maymon R, Shulman S. Controversies and problems in the current management of ectopic pregnancy. Hum Reprod 1996;2:541–51.