1. Nuffield Department of Surgical Sciences, John Radcliffe Hospital, University of Oxford, Oxford, UK;
2. Oxford University Clinical Academic Graduate School (OUCAGs), University of Oxford, Oxford, UK;
3. Department of General Practice and Primary Health Care, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand;
4. Oxford Health NHS Foundation Trust, Oxford, UK;
5. Department of Psychiatry, Oxford University, Oxford, UK;
6. Institute of Psychiatry, King’s College, London, UK