September 2017: Section 1.7 has been stood down as it has been superseded by publication of the NICE guideline on endometriosis.
August 2016: We reviewed the evidence for recommendation 18.104.22.168 on intrauterine insemination, but did not change the action recommended. This recommendation is marked as .
Other recommendations are marked as follows:
[new 2013] if the evidence was reviewed and the recommendation was updated or added in 2013
 if the evidence was reviewed in 2013 but no changes were made to the recommendation
[2004, amended 2013] if the evidence has not been updated and reviewed since 2004, but a small amendment was made to the recommendation in 2013
 if the evidence has not been updated and reviewed since 2004.