[1] Wellbeing services county of Ostrobothnia,Department of Paediatrics, Vaasa Central Hospital
[2] University of Oulu,PEDEGO Research Unit
[3] New Childrens Hospital,The Finnish Center for Pediatric and Adolescent Pain Management and Research HUS
[4] Helsinki University Hospital and University of Helsinki,New Childrens Hospital, Pediatric Research Center
[5] University of Turku,Department of Biostatistics
[6] Kuopio University Hospital,Department of Paediatrics
[7] Tampere University Hospital,Department of Paediatrics
[8] Tampere University,Centre for Child Health Research
[9] Oulu University Hospital,Department of Paediatrics
[10] Oulu University Hospital and University of Oulu,Medical Research Center
[11] Central Ostrobothnia Central Hospital,Department of Paediatrics
[12] Turku University Hospital,Department of Paediatrics
[13] Päijät-Häme Central Hospital,Department of Paediatrics
[14] Kanta-Häme Central Hospital,Department of Children and Adolescents