📖Transsexualism [ Part I ]

url

http://ai.eecs.umich.edu/people/conway/TS/TS.html

The first such study, of 25 genetically XY boys who had missing penises as infants (cloacal exstrophy syndrome) and who had been surgically turned into girls and raised as girls, revealed that all 25 developed MALE gender identities.