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Cite this article
Billings JJ (1980). Two methods of natural family planning. *American Journal of Obstetrics and Gynecology*, *136*(5), 697-698. https://doi.org/10.1016/0002-9378(80)91034-0
Billings JJ. Two methods of natural family planning. Am J Obstet Gynecol. 1980. doi:10.1016/0002-9378(80)91034-0
Billings, J. J. "Two methods of natural family planning." *American journal of obstetrics and gynecology*, 1980.
Bourdillon C, 1982The Central African Journal of Medicine
Frequently, when one mentions natural family planning methods, the response is doubt, bewilderment, ridicule, or scorn. Much of this is due to the fact that many people know only of the rhythm method,...
Billings JJ, 1982American Journal of Obstetrics and Gynecology
Wade et al.'s report, entitled "A randomized prospective study of the use-effectiveness of 2 methods of natural family planning," contains items worthy of emphasis. These includes the following: 1) le...
Clubb E, 1986Journal of the Royal Society of Health
Natural methods of family planning make use of the naturally occurring signs and symptoms of the fertile and infertile phases of the menstrual cycle. Recognizable signs and symptoms occur cyclically, ...