1. King’s Centre for Military Health Research, Institute of Psychology, Psychiatry and Neuroscience, King’s College London, London, UK
2. Department of Experimental Psychology, Anna Watts Building, University of Oxford, Oxford
3. Combat Stress, Research Department, Tyrwhitt House, Leatherhead, Surrey, UK
4. Department of Psychological Medicine, Institute of Psychology, Psychiatry and Neuroscience, King’s College London, London, UK