Billings method natural family planning cervical mucus, natural family planning methods comparison, Billings JJ ovulation method fertility awareness, cervical mucus method versus sympto-thermal method, natural family planning effectiveness Catholic teaching, fertility awareness based methods contraception comparison, natural family planning 1980 Billings review, mucus observation ovulation prediction natural method, periodic abstinence fertility regulation methods, natural family planning American Journal Obstetrics Gynecology
PMID 7355954 7355954 DOI 10.1016/0002-9378(80)91034-0 10.1016/0002-9378(80)91034-0
Cite this article
Billings, J. J. (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;136(5):697-698. doi:10.1016/0002-9378(80)91034-0
Billings, J. J. "Two methods of natural family planning." *American Journal of Obstetrics and Gynecology*, vol. 136, no. 5, 1980, pp. 697-698.
There are couples with unmet family planning needs and couples who do not use any modern method, yet they desire to space or avoid pregnancies. Many of them look for safe and effective options like th...
Soler F et al., 1995Revista De Enfermeria (Barcelona, Spain)
The scientific foundations and most notable features of modern natural family planning (NFP) methods are described. NFP techniques require observation of the signs and symptoms occurring during the fe...
The following is an address presented to a summit meeting on natural family planning sponsored by the Pontifical Councilfor the Family in December, 1992
I am honored and privileged to have this opport...
NaProTECHNOLOGY > Creighton Model System > Development and HistoryFertility Awareness > Methods > Billings Ovulation MethodEthics/Philosophy > Catholic Teaching > Natural Family Planning
Derzko CM, 1986Canadian Family Physician Medecin De Famille Canadien
Natural Family Planning (NFP) is defined by the World Health Organization (WHO) as "methods for planning or avoiding pregnancies by observation of the natural signs and symptoms of the fertile and inf...