1Imperial College, London, UK
2Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
3Social, Genetic, Developmental and Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
4UK National Institute for Health Research (NIHR) Biomedical Research Centre, South London and Maudsley Hospital, London, UK
5Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
6Department of Biostatistics, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
7Diabetes Research Group, Faculty of Life Sciences and Medicine, King's College London, UK