Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Review
. 2015 Feb;82(1):67-81.
doi: 10.1179/0024363914Z.000000000104.

Current Medical ResearchWinter/Spring 2014

Affiliations
Review

Current Medical ResearchWinter/Spring 2014

Richard J Fehring. Linacre Q. 2015 Feb.
No abstract available

PubMed Disclaimer

References

    1. Arévalo M.1997. Expanding the availability and improving delivery of natural family planning services and fertility awareness education: providers' perspectives. Advances in Contraception 13: 275–81. - PubMed
    1. Arévalo M., Jennings V., and Sinai I.. 2002. Efficacy of a new method of family planning: the Standard Days Method. Contraception 65(5): 333–8. - PubMed
    1. Arévalo M., Jennings V., Nikula M., and Sinai I.. 2004. Efficacy of the new twoday method of family planning. Fertility and Sterility 82: 885–92. - PubMed
    1. Fehring R.2002. Accuracy of the peak day of cervical mucus as a biological marker of fertility. Contraception 66: 231–5. - PubMed
    1. Fehring R.2005. New low and high tech calendar methods of family planning. Journal of Nurse Midwifery and Women's Health 50: 31–7. - PubMed

LinkOut - more resources