Scientific Issues in NFP

Billings, E.L., & Billings, J.J.  (1977).  Pregnancy investigation.  International Review of Natural Family Planning, 1(1), 35-39.

Bracken, M.S.  (1983/March).  Frequency of non-hormonal contraception around conception and association with congenital malformations in offspring.  American Journal of Epidemiology, 117(3), 281-291.

Dewan, E.M.  (1979/December).  On the possibility of a perfect rhythm method of birth control by periodic light stimulation.  American Journal of Obstetrics and Gynecology, 99, 1016-1019.

Fordney-Steelage, D.  (1981).  A review of cervical mucus and sperm interactions in humans.  International Journal of Fertility, 26(3), 161-169.

France, J.T., Graham, F.M., Gosling, L., Hair, P., & Knox, B.S.  (1992).  Characteristics of natural conceptual cycles occurring in a prospective study of sex preselection:  Fertility awareness symptoms, hormone levels, sperm survival, and pregnancy outcomes.  International Journal of Fertility, 37, 244-255.

Gray, R.H.  (1984).  Aged gametes, adverse pregnancy outcomes and natural family planning:  An epidemiologic review.  Contraception, 30(4), 297-309.

Gray, R.H., & Kambic, R.T.  (1988).  Epidemiological studies of natural family planning.  Human Reproduction, 3, 693-698.

Gray, R.H.  (1991).  Natural family planning and sex selection:  Fact or fiction?  American Journal of Obstetrics and Gynecology, 165, 1982-1984.

Guerrero, R., & Lanctot, D.  (1970/May).  Aging of fertilizing gametes and spontaneous abortion:  Effect of the day of ovulation and the time of insemination.  American Journal of Obstetrics and Gynecology, 107, 263-267.

Guerrero, R.  (1978/November).  The aging of gametes:  The known and the unknown.  Linacre Quarterly, 45(4), 345-357.

Guerrero, V., & Guerrero, R.  (1970).  Sex ratio:  A statistical association with the type and time of insemination in the menstrual cycle.  International Journal of Fertility, 15, 221-225.

Hilgers, T.W.  (1977/September).  The protection afforded by the cervical mucus in human reproduction.  Bulletin National Family Planning Council Vict, 4-12.

Jennings, V.  (1992).  Major research issues in natural family planning.  Advances in Contraception, 8, 185.

Jochle, W.  (1973/June).  Coitus-induced ovulation.  Contraception, 7, 523-564.

Jongbloet, P.H.  (1985).  The aging gamete in relation to birth control failures and Down syndrome.  European Journal of Pediatrics, 144(4), 343-347.

Kambic, R., Gray, R.H., & Simpson, J.L.  (1988).  Aging gametes and NFP:  What is currently known?  International Review of Natural Family Planning, 12(3), 226-249.

Kambic, R., & Gray, R.H.  (1989).  Interobserver variation in estimation of day of conception intercourse using selected natural family planning charts.  Fertility and Sterility, 51, 430-434.

Kambic, R., Gray, R.H., & Simpson, J.L.  (1989).  Outcome of pregnancy in users of natural family planning.  International Journal of Gynecology and Obstetrics, 1 [supplement], 99-110.

Klaus, H.  (1981).  Natural family planning:  A review.  Obstetrical and Gynecological Survey, 37(2), 128-150.

McCusker, M.P.  (1982).  The subfertile couple.  JOGN Nursing, 11(3), 157-162.

Mancuso, S., Fulghesu, A.M., Di Simone, N., Riccardi, P., Vitale, E., Castellani, R., Bellante, F.P., & Lanzone, A.  (1991).  Changes in fatty acids sebum composition during human menstrual cycle:  Possible relationships with fertile period.  Acta Europaea Fertilitatis, 22, 43-45.

Mettler, L.  (1990).  Cervical factors in infertility.  Current Opinion in Obstetrics & Gynecology, 2, 193-199.

Nerbun, B., & Carter, P.  (1982).  The scientific basis of the ovulation method of natural family planning.  Bulletin of the South Carolina Academy of Science, 44, 77.

Perez, A., Eger, R., Domenichini, V., Kambic, R., & Gray, R.H.  (1985).  Sex ratio associated with natural family planning [letter].  Fertility and Sterility, 43(1), 152-153.

Reame, N.E.  (1992).  A prospective study of the menstrual cycle and spinal cord injury.  American Journal of Physical Medicine and Rehabilitation, 71, 15-21.

Roetzer, J.  (1988).  Natural family planning and pregnancy outcome.  International Journal of Fertility, 33 [supplement], 40-42.

Simpson, J.L., Gray, R.H., Queenan, J.T., Mena, P., Perez, A., Kambic, R.T., Tagliabue, G., Pardo, F., Stevenson, W.S., Barbato, M.  (1988).  Pregnancy outcome associated with natural family planning NFP scientific basis and experimental design for an international cohort study.  Advances in Contraception, 4, 247-264.

Simpson, J.L., Gray, R.H., Queenan, J.T., Kambic, R.T., Perez, A., Mena, P., Barbato, M., Pardo, F., Tagliabue, G., Bitto, A., Stevenson, W.S.  (1991).  Fetal outcome among pregnancies in natural family planning acceptors:  An international cohort study.  American Journal of Obstetrics and Gynecology, 165, 1981-1982. [Supplement, 2, 165-166.

Simpson, J.T., Gray, R.L., Queenan, J.T., Kambic, R.T., Perez, A., Mena, P., Barbato, M., Pardo, F., Tagliabue, G., et al.  (1992).  Assessing safety in natural family planning users.  Advances in Contraception, 8, 185-186.

Van Look, P.F.A., & Mancuso, S.  (1989).  Natural fertility regulation today.  International Journal of Gynecology and Obstetrics, [supplement 1], 1-167.

Vrbicky, K.W., Wells, I.C., Hilgers, T.W., Kable, W.T., Baumstark, J.S., & Elias, C.J.  (1982).  Evidence for the involvement of beta-endorphin in the human menstrual cycle.  Fertility and Sterility, 38, 701-704.

World Health Organization.  (1984).  A prospective multicenter study of the ovulation method of natural family planning IV:  The outcome of pregnancy.  Fertility and Sterility, 41(4), 593-598.

World Health Organization.  (1985).  A prospective multicenter study to develop universal immunochemical tests for predicting the fertile period in women.  International Journal of Fertility, 30(3), 18-30.

Yudin, A.I., Hanson, F.W., & Katz, D.F.  (1989).  Human cervical mucus and its interaction with sperm:  A fine-structural view.  Biology of Reproduction, 40, 661-671.

Zarutskie, P.W., Muller, C.H., Magone, M., &  Soules, M.R.  (1989).  The clinical relevance of sex selection techniques.  Fertility & Sterility, 52, 891-905.