1. UCL – Institute of Education, University College London, London, UK
2. Multilanguage and Cognition Lab, UCL – Institute of Education, London, UK
3. Centre for Brain and Cognitive Development, Department of Psychological Sciences, Birkbeck College, London, UK
4. MRC Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College, London, UK
5. National Institute for Health Research Health Protection Research Unit in Chemical and Radiation Threats and Hazards, Imperial College London, London, UK
6. Mohn Centre for Children’s Health and Wellbeing, School of Public Health, Imperial College London, London, UK