The ovulation method of family planning
With the Billings Ovulation Method of natural family planning, women chart the symptoms of changes of their cervical mucus to determine when they are ovulating. The Ovulation Method is simple to learn...
Lancet (London, England), 1(7745), 282-284
No abstract available for this article.
Billings, E. L., Brown, J. B., Billings, J. J., & Burger, H. G. (1972). Symptoms and hormonal changes accompanying ovulation. *Lancet (London, England)*, *1*(7745), 282-284. https://doi.org/10.1016/s0140-6736(72)90291-7
Billings EL, Brown JB, Billings JJ, Burger HG. Symptoms and hormonal changes accompanying ovulation. Lancet. 1972;1(7745):282-284. doi:10.1016/s0140-6736(72)90291-7
Billings, E. L., et al. "Symptoms and hormonal changes accompanying ovulation." *Lancet (London, England)*, vol. 1, no. 7745, 1972, pp. 282-284.
Adult, Estrogens/urine, Family Planning Services, Female, Humans, Luteinizing Hormone/blood, Mucus/metabolism, Ovulation, Pregnanediol/urine, Time Factors, Vagina/metabolism, Estrogens, Luteinizing Hormone, Pregnanediol