1. Gender Identity Clinic, Child, Youth, and Family Services, Centre for Addiction and Mental Health and Department of Psychiatry, University of Toronto, Toronto, Ontario M5T 1R8, Canada;
2. Department of Psychology, University of Lethbridge, Lethbridge, Alberta T1K 3M4, Canada
3. Department of Medical Psychology, VU University Medical Center and EMGO Institute for Health and Care Research, Amsterdam 1081 HV, The Netherlands