The IOM (Institute Of Medicine) is a division of the National Academy of Sciences."Exploring Biological Contributions to Human Health: Does Sex Matter? http://www.iom.edu/IOM/IOMHome.nsf/Pages/does+sex+matter+summary
The Female Patient - a peer reviewed journal http://www.femalepatient.com
Links from "The Female Patient" http://www.femalehealthlinks.com
ACP Online Gender based medicine http://www.acponline.org/journals/news/clinical.htm#gbmed