1. Child and Adolescent Public Health Epidemiology; Department of Public Health Sciences; Karolinska Institutet; Stockholm Sweden
2. Child and Adolescent Health Unit; Centre for Epidemiology and Community Medicine; Stockholm County Council; Stockholm Sweden
3. Public Health Agency of Sweden; Stockholm Sweden
4. Institute of Environmental Medicine; Karolinska Institutet; Stockholm Sweden
5. Unit of Environmental Medicine; Centre for Occupational and Environmental Medicine; Stockholm County Council; Stockholm Sweden