1 Department of Endocrinology, Newcastle-upon-Tyne Hospitals NHS Trust, Newcastle-upon-Tyne, UK.
2 Department of Endocrinology, St George's Hospital Medical School, London, UK; Department of Endocrinology, St George's Healthcare NHS Trust, London, UK; Gender Identity Clinic, West London Mental Health NHS Trust, London, UK.
3 Department of Endocrinology, Newcastle-upon-Tyne Hospitals NHS Trust, Newcastle-upon-Tyne, UK; Endocrine Research Group, Institute of Genetic Medicine, University of Newcastle-upon-Tyne, Newcastle-upon-Tyne, NE1 3BZ, UK. Electronic address: [email protected].