1. Department of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden
2. Woolcock Insitute of Medical Research University of Sydney Sydney New South Wales Australia
3. Obstetrics and Gynaecology Unit Södersjukhuset Stockholm Sweden
4. Center of Neurodevelopmental Disorders at Karolinska Institutet (KIND) Center for Psychiatric Research Department of Women's & Children's Health Karolinska Institutet & Child and Adolescent Psychiatry Stockholm Health Care Services Stockholm County Council Stockholm Sweden
5. Curtin Autism Research Group School of Occupational Therapy, Social Work and Speech Pathology Curtin University Perth Western Australia Australia
6. School of Medical Sciences Örebro University Örebro Sweden
7. Department of Psychological and Brain Sciences Indiana University Bloomington Indiana USA
8. Pediatric Allergy and Pulmonology Unit Astrid Lindgren Children's Hospital Karolinska University Hospital Stockholm Sweden