Kenneth J. Zucker, Ph.D., is Head of the Child and Adolescent Gender Identity Clinic and Psychologist-in-Charge at the Child and Family Studies Centre, Clarke Institute of Psychiatry. He is also Associate Professor in the Departments of Psychiatry and Psychology at the University of Toronto. Susan J. Bradley, M.D., is Psychiatrist-in-Chief at the Hospital for Sick Children and Head of the Division of Child Psychiatry at the University of Toronto. She is the Consultant Psychiatrist at the Child and Adolescent Gender Identity Clinic, Child and Family Studies Centre, of the Clarke Institute o...