Skip to main content
The BMJ logoLink to The BMJ
letter
. 1993 Oct 16;307(6910):1003. doi: 10.1136/bmj.307.6910.1003

Natural family planning. Effective only if used perfectly.

J Trussell
PMCID: PMC1679162  PMID: 8241882

Full text

PDF

Page 1003

1003

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Ryder R. E. "Natural family planning": effective birth control supported by the Catholic Church. BMJ. 1993 Sep 18;307(6906):723–726. doi: 10.1136/bmj.307.6906.723. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Trussell J., Grummer-Strawn L. Contraceptive failure of the ovulation method of periodic abstinence. Fam Plann Perspect. 1990 Mar-Apr;22(2):65–75. [PubMed] [Google Scholar]
  3. Trussell J., Kost K. Contraceptive failure in the United States: a critical review of the literature. Stud Fam Plann. 1987 Sep-Oct;18(5):237–283. [PubMed] [Google Scholar]

Articles from BMJ : British Medical Journal are provided here courtesy of BMJ Publishing Group

RESOURCES