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Letters to the Editor

Efficacy of natural family planning methods

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Pages 381-382 | Published online: 24 Sep 2010

References

  • Mansour D, Inki P, Gemzell-Danielsson K. Efficacy of contraceptive methods: A review of the literature. Eur J Contracept Reprod Health Care 2010;15:4–16.
  • Freundl G. European multicenter study of natural family planning (1989–1995): efficacy and drop-out. Adv Contracept 1999;15:69–83.
  • World Health Organization. Medical eligibility criteria for contraceptive use, 4th edn. Geneva: World Health Organization 2009. Accessed 1 August 2010 from: http://whqlibdoc.who.int/publications/2009/9789241563888_eng.pdf
  • Frank-Herrmann P, Heil J, Gnoth C, et al The effectiveness of a fertility awareness based method to avoid pregnancy in relation to a couple's sexual behaviour during the fertile time: A prospective longitudinal study. Hum Reprod 2007;22:1310–9.

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