1 MRC-PHE Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Faculty of Medicine, Imperial College London, London, UK.
2 National Institute for Health Research Health Protection Research Unit in Health Impact of Environmental Hazards at King's College London, a partnership with Public Health England, and collaboration with Imperial College London, London, UK.
3 Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
4 Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland.
5 University of Basel, Basel, Switzerland.
6 Centre for Educational Neuroscience, Department of Psychological Sciences, Birkbeck, University of London, London, UK.