1 Health Service and Population Research Department, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
2 ESRC Centre for Society and Mental Health, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, SE5 8AF, UK.
3 Health Service and Population Research Department, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK. craig.morgan@kcl.ac.uk.
4 ESRC Centre for Society and Mental Health, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, SE5 8AF, UK. craig.morgan@kcl.ac.uk.
5 Department of Nutritional Sciences, School of Life Course Sciences, Faculty of Life Sciences & Medicine, King's College London, Stand, WC2R 2LS, UK.
6 The McPin Foundation, 7-14 Great Dover Street, London, SE1 4YR, UK.
7 Centre for Psychiatry, Wolfson Institute of Preventive Medicine, Barts & The London, Blakey et al. BMC Public Health (2021) 21:849 Page 12 of 13 Queen Mary University of London, Charterhouse Square Campus, Old Anatomy Building, London, EC1M 6BQ, UK.
8 Developmental Risk and Resilience Unit, University College London, 26 Bedford Way, London, WC1H 0AP, UK.