Changes

Except for condoms, most methods offer little protection against [[STD|sexually transmitted disease]]s.<ref>http://www.mayoclinic.com/health/birth-control/BI99999</ref>

Except for condoms, most methods offer little protection against [[STD|sexually transmitted disease]]s.<ref>http://www.mayoclinic.com/health/birth-control/BI99999</ref>

''Effectiveness/Failure rate refers to the percentage of women experiencing unwanted pregnancy in first year of continuous use.''

''Effectiveness/Failure rate refers to the percentage of women experiencing unwanted pregnancy in first year of continuous use. These numbers are not additive, e.g. use for two years does not double the risk.''

== Barrier Methods ==

== Barrier Methods ==