1. Department of Psychology University of Notre Dame Notre Dame IN USA
2. Department of Population Health Sciences School of Public Health Georgia State University Atlanta GA USA
3. Netherlands Twin Register Department of Biological Psychology Vrije Universiteit Amsterdam Amsterdam The Netherlands
4. Amsterdam Public Health research institute Faculty of Behavioural and Movement Sciences Vrije Universiteit Amsterdam Amsterdam The Netherlands
5. Medical Research Council Social, Genetic, and Developmental Psychiatry Centre Institute of Psychiatry, Psychology, and Neuroscience King's College London London UK
6. Gillberg Neuropsychiatry Centre University of Gothenburg Gothenburg Sweden
7. Centre for Ethics, Law and Mental Health (CELAM) University of Gothenburg Gothenburg Sweden
8. Institute for Molecular Medicine Finland University of Helsinki Helsinki Finland
9. Department of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden
10. Department of Psychology University of Jyvaskyla Jyvaskyla Finland
11. Department of Psychological and Brain Sciences Indiana University Bloomington IN USA
12. Department of Public Health University of Helsinki Helsinki Finland
13. Amsterdam Neuroscience Amsterdam The Netherlands