1. Department of Child and Adolescent Psychiatry, Emma Children’s Hospital, Amsterdam University Medical Centers, location Vumc, Amsterdam, the Netherlands
2. Tavistock and Portman NHS Foundation Trust and Regent’s University London, London, United Kingdom
3. Department of Psychiatry and Division of Endocrinology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, USA
4. Transgender Infopunt, Ghent University Hospital, Ghent, Belgium
5. Department of Pediatric Endocrinology, Emma Children’s Hospital, Amsterdam University Medical Centers, location Vumc, Amsterdam, The Netherlands
6. Independent legal scholar and consulting expert in transgender health policy and ethics, World Professional Association for Transgender Health (WPATH), USA
7. Division of Pediatric Endocrinology, Department of Pediatrics, University of California San Francisco, San Francisco, California, USA