1. Department of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden
2. Department of Child Psychiatry Medical University of Warsaw Warsaw Poland
3. Child and Adolescent Psychiatry Stockholm Health Care Service Region Stockholm Sweden
4. Division of Psychological Medicine and Clinical Neurosciences MRC Centre for Neuropsychiatric Genetics and Genomics Cardiff University Cardiff UK
5. School of Medical Sciences Örebro University Örebro Sweden
6. Department of Psychological and Brain Sciences Indiana University Bloomington IN USA