1. Department of Child and Adolescent Psychiatry/Psychology; Sophia Children's Hospital, Erasmus University Medical Center; Rotterdam The Netherlands
2. The Generation R Study Group, Erasmus University, Medical Center, PO Box 2040; 3000 CA Rotterdam The Netherlands
3. Telethon Kids Institute, University of Western Australia; Perth Western Australia Australia
4. Cooperative Research Centre for Living with Autism (Autism CRC), Long Pocket Campus; Brisbane Queensland Australia
5. Centre for Child and Family Studies, Leiden University; Leiden The Netherlands
6. Department of Obstetrics and Gynaecology; University of Melbourne and the Royal Women's Hospital; Parkville Victoria Australia
7. School of Women's and Infants' Health; University of Western Australia; Crawley Western Australia Australia
8. School of Psychological Science; University of Western Australia; Crawley Western Australia Australia
9. Olga Tennison Autism Research Centre, La Trobe University; Bundoora Victoria Australia
10. Department of Epidemiology; Erasmus University Medical Center; Rotterdam The Netherlands
11. Department of Pediatrics; Sophia Children's Hospital, Erasmus University Medical Center; Rotterdam The Netherlands
12. Department of Radiology; Erasmus University Medical Center; Rotterdam The Netherlands