1. Department of Endocrinology, University Hospital of Wales, Cardiff, United Kingdom
2. Department of Radiology, Erasmus Medical Center, CA Rotterdam, Netherlands
3. Nuffield Department of Surgical Sciences, Medical Sciences Division, University of Oxford, Oxford United Kingdom
4. Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff, United Kingdom
5. Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff, United Kingdom