"Though he may be an ace in the operating room, Greenfield, a professor
emeritus at the University of Michigan, proved tone deaf ? or worse ? as
a writer and editor. In a Valentine's Day editorial for Surgery News, a publication affiliated with the American College of Surgeons, Greenfield extolled the virtues of semen as a mood-enhancer for women. That editorial proved his undoing." (Scott Hensley, Shots: An NPR Health Blog) More here...
http://well.blogs.nytimes.com/2011/04/15/sexism-charges-divide-surgeons-group/
You can read the full editorial here:
The notice of his resignation:
http://www.nytimes.com/2011/04/18/health/18surgeon.html?_r=2