1. Department of Pediatrics and Adolescence, PEDEGO Research Unit, Medical Research Center, Oulu University Hospital and University of Oulu, Oulu, Finland.
2. Department of Diagnostic Radiology, Oulu University Hospital and University of Oulu, Oulu, Finland.
3. Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland.
4. Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland.
5. Department of Oncology and Radiotherapy, Oulu University Hospital, Oulu, Finland.
6. Department of Clinical Radiology, Kuopio University Hospital, Kuopio, Finland.
7. Department of Pediatric Radiology, HUS Medical Imaging Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
8. Department of Radiation Oncology, Comprehensive Cancer Center, Helsinki University Hospital, Helsinki, Finland.
9. Department of Pediatrics and Adolescence, Kuopio University Hospital, Kuopio, Finland.
10. University of Eastern Finland, Kuopio, Finland.
11. Department of Pediatrics and Adolescence, Turku University Hospital and Turku University, Turku, Finland.
12. Department of Pediatrics and Adolescence, Tampere University Hospital, Tampere, Finland.
13. Department of Pediatrics and Adolescence, Helsinki University Hospital, Helsinki, Finland.
14. Department of Child Neurology, Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
15. Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden.