Access to specialized care for transgendered populations. Health systems organized to take account of the special healthcare needs of marginalized groups who may face barriers in accessing health services. (http://www.who.int/reproductivehealth/topics/linkages/guidance_package.pdf)
Persons having a sense of persistent identification with, and expression of, gender-coded behaviors not typically associated with one's anatomical sex at birth, and with or without a desire to undergo SEX REASSIGNMENT PROCEDURES.
Severe gender dysphoria, coupled with a persistent desire for the physical characteristics and social roles that connote the opposite biological sex. (APA, DSM-IV, 1994)