1. King’s Centre for Military Health Research, Department of Psychological Medicine, Institute for Psychiatry, Psychology & Neuroscience, King’s College London, London, UK
2. Department of Psychological Medicine, Institute for Psychiatry, Psychology & Neuroscience, King’s College London, London, UK
3. University of Exeter, Exeter, UK
4. Division of Psychology, Department of Life Sciences, Brunel University London, London, UK
5. Department of Old Age Psychiatry, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
6. Department of Medicine, Imperial College London, London, UK