1. Institute of Environmental Medicine Karolinska Institutet Stockholm Sweden
2. Sachs’ Children and Youth Hospital Södersjukhuset Stockholm Sweden
3. St John’s Institute of Dermatology King’s College London London UK
4. Department of Epidemiology, Biostatistics and Occupational Health, Faculty of Medicine McGill University Montreal Quebec Canada
5. Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine Harvard Medical School and Harvard Pilgrim Health Care Institute Boston Massachusetts
6. Department of Population Health Sciences, Bristol Medical School University of Bristol Bristol UK
7. National Research and Applied Medicine Mother and Child Centre Minsk Belarus
8. Departments of Pediatrics and of Epidemiology, Biostatistics and Occupational Health, Faculty of Medicine McGill University Montreal Quebec Canada
9. University Hospitals Bristol NHS Foundation Trust, National Institute for Health Research, Bristol Biomedical Research Centre, University of Bristol Bristol UK
10. Medical Research Council Integrative Epidemiology Unit University of Bristol Bristol UK
11. St John's Institute of Dermatology, Guy's and St Thomas' Hospital NHS Foundation Trust and King's College London London UK