1. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Solna, Sweden
2. Department of Child Psychiatry, Medical University of Warsaw, Warsaw, Poland
3. Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
4. Sachs’ Children and Youth Hospital, Stockholm South General Hospital, Stockholm, Sweden
5. Department of Clinical Science and Education Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
6. Clinical Epidemiology Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
7. Unit of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
8. School of Medical Sciences, Örebro University, Örebro, Sweden
9. Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
10. Lung and Allergy Unit, Astrid Lindgren Children’s Hospital, Stockholm, Sweden
11. Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
12. Department of Pediatrics, Örebro University Hospital, Örebro, Sweden
13. Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, United Kingdom
14. Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York