1 Department of Endocrinology & Metabolism, Newcastle-Upon-Tyne Hospitals NHS Foundation Trust, Royal Victoria Infirmary, Newcastle Upon Tyne, UK.
2 Centre for Endocrinology, William Harvey Research Institute, Queen Mary University of London, London, UK.
3 Department of Paediatric Endocrinology, Royal London Children's Hospital, Barts Health NHS Trust, London, UK.
4 Department of Paediatric Endocrinology, Newcastle-Upon-Tyne Hospitals NHS Foundation Trust, Great North Children's Hospital, Newcastle Upon Tyne, UK.
5 Translational & Clinical Research Institute, University of Newcastle-Upon-Tyne, Newcastle Upon Tyne, UK.
6 Department of Metabolism, Digestion & Reproduction, Imperial College London, London, UK.
7 Northern Gender Dysphoria Service, Cumbria, Northumberland, Tyne & Wear NHS Foundation Trust, Benfield House, Walkergate Park Hospital, Newcastle Upon Tyne, UK.