[1] Ryhov County Hospital,Department of Paediatrics
[2] Linköping University,Department of Biomedical and Clinical Sciences
[3] Centre of Registers in Region Västra Götaland,Department of Orthopaedics, Institute of Clinical Sciences
[4] Sahlgrenska Academy,The Sahlgrenska Academy, Institute of Medicine
[5] University of Gothenburg,Department of Medicine
[6] University of Gothenburg,The Sahlgrenska Academy, Institute of Clinical Sciences
[7] Sahlgrenska University Hospital,Department of Paediatrics
[8] University of Gothenburg,undefined
[9] NU Hospital Group,undefined