1. Asking questions;N Bradburn,2004
2. How many adults identify as transgender in the United States?;AR Flores,2016
3. Global health burden and needs of transgender populations: a review;SL Reisner;Lancet,2016
4. What a difference sex and gender make;GR Bauer,2012
5. International handbook on the demography of sexuality;SLC Meier,2013