BUENOS AIRES — A Buenos Aires public registry gave new identity papers this week to 10-year-old Mauro, the first Argentine youth born a girl to change his official gender identity to male under a landmark “Gender Identity Law.”

Last year, Lulu, a 6-year-old girl, had her sex change made official pursuant to the new 2012 law, which is believed to be the first of its kind in the world, Clarín reported.

The parents of Mauro, who was born with female genitalia and whose birth name was Fachita, were able to obtain his ID papers with help from the Argentine Federation of Lesbians, Gays, Bisexuals and Transsexuals and RITTA (representing transvestites), whose members attended the registration.

“It is essential to understand that self-perception in terms of gender identity occurs at a very early age,” María Rachid, a member of the Argentine parliament’s human rights committee, told the newspaper La Nación.

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