In the 1950s Dr Money developed a theory that revolutionised our understanding of gender. Money believed that what he called our 'gender identity' - what makes us think, feel and behave as boys or girls - is not fully formed by the time of birth.
http://www.bbc.co.uk/science/horizon/2000/boyturnedgirl.shtml
(oh it gets worse...)
I've read thousands of articles on the subject but never this one, at least not that I can recall. I mentioned it to my wife who was familiar with it - she said the boy committed suicide fairly recently.
Do you have any updated articles other than the above 2000 article?