Barrier methods of birth controlReferencesCitationsTrussell J (2004). The essentials of contraception:
Efficacy, safety, and personal considerations. In RA Hatcher et al., eds.,
Contraceptive Technology, 18th ed., pp. 221–252. New
York: Ardent Media. U.S. Food and Drug Administration (2002).
Birth Control Guide. Available online:
http://www.fda.gov/fdac/features/1997/babyguide.pdf.
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