King’s College London - Department of Psychological Medicine, King’s College London - King’s Centre for Military Health Research, University College London - Division of Psychiatry, University College London - Division of Psychiatry, King’s College London - Department of Biostatistics & Health Informatics, King’s College London - Department of Psychological Medicine, King’s College London - Department of Biostatistics & Health Informatics, Government of the United Kingdom - South London and Maudsley NHS Foundation Trust, King’s College London - Department of Psychological Medicine, King’s College London - Department of Psychological Medicine, King’s College London - Department of Psychological Medicine, Guy's and St Thomas' NHS Foundation Trust - Department of Occupational Health, City University London - Violence and Society Centre, University of Bristol - Centre for Academic Mental Health, King’s College London - Department of Psychological Medicine, University College London - Division of Psychiatry, King’s College London - School of Biomedical Engineering & Imaging Sciences, King’s College London - Department of Psychological Medicine, King’s College London - Department of Psychological Medicine and King’s College London - Department of Psychological Medicine