Brown A. Long-term contraceptives. Best Pract Res Clin Obstet Gynaecol 2010;24:617–631.
10.
Grimes DA. Forgettable contraception. Contraception 2009;80:497– 499.
11.
Potts M. Coitus interruptus. In: Corson SL, Derman RJ, Tyrer L, eds. Fertility control. Boston, MA: Little, Brown, 1985:299–306.
12.
DiVincenzi, I (for the European Study Group). A longitudinal study of human immunodeficiency virus transmission by heterosexual partners. N Engl J Med 1994;331:341–346.
13.
Jones RK, Fennell J, Higgins JA, et al. Better than nothing or savvy risk-reduction practice? The importance of withdrawal. Contraception 2009;79:407–410.
14.
McNeilly AS. Suckling and the control of gonadotropin secretion. In: Kenobi E, Neil JD, Ewing LI, et al., eds. The physiology of reproduction. New York: Raven Press, 1988:2323–2349.
15.
Short RV, Lewis PR, Renfree, MB, et al. Contraceptive effects of extended lactational amenorrhoea: beyond the Bellagio Consensus. Lancet 1991:337:715–717.
16.
Queenan JT. Contraception and breast feeding. Clin Obstet Gynecol 2004;47:734–739.
17.
Van der Wijden C, Kleijnen J, Van den Berk T. Lactational amenorrhea for family planning. Cochrane Database Syst Rev 2003;4:CD001329.
18.
Lee SY, Kim MT, Kim SW, et al. Effect of lifetime lactation on breast cancer risk: a Korean women’s cohort study. Int J Cancer 2003;105:390–393.
19.
American College of Obstetricians and Gynecologists. Special Report from ACOG. Breastfeeding: maternal and infant aspects. ACOG Clinical Review 2009;12: Supp. 1S-15S.
20.
Genuis SJ, Bouchard TP. High-tech family planning: reproductive regulation through computerized fertility monitoring. Eur J Obstet Gynecol Reprod Biol 2010;153:124–130.
21.
Fehring RJ, Schneider M, Barron ML, et al. Cohort comparison of two fertility awareness methods of family planning. J Reprod Med 2009;54:165–170.
22.
Russell, J, Grummer-Strawn, L. Contraceptive failure of the ovulation method of periodic abstinence. Fam Plann Perspect 1990;22: 65–75.
23.
Che, Y, Cleland JG, Ali MM. Periodic abstinence in developing countries: an assessment of failure rates and consequences. Contraception 2004;69:15–21.
24.
Guerrero R, Rojas OI. Spontaneous abortion and aging of human ova and spermatozoa. N Engl J Med 1975;293.
25.
Gallo MF. Non-latex versus latex male condoms for contraception. Cochrane Database Syst Rev 2003;2:CD003550.
26.
Grady, WR, Tanfer, K. Condom breakage and slippage among men in the United States. Fam Plann Perspect 1994;26:107–112.
27.