[1] Oslo University Hospital,Division of Pediatric and Adolescent Medicine
[2] Haukeland University Hospital,Department of Medicine
[3] University of Bergen,Department of Clinical Medicine
[4] University of Bergen,Department of Clinical Science
[5] Haukeland University Hospital,Department of Pediatrics
[6] The Norwegian Renal Registry,Department of Transplantation Medicine
[7] Oslo University Hospital – Rikshospitalet,Department of Pharmacy
[8] Oslo University Hospital – Rikshospitalet,Department of Pathology
[9] University of Oslo,Department of Pediatrics and Adolescence Medicine
[10] Haukeland University Hospital,Paediatric Research Group, Faculty of Health Sciences
[11] University Hospital of North Norway,Department of Clinical and Molecular Medicine
[12] UiT-The Arctic University of Norway,Department of Pathology
[13] Norwegian University of Science and Technology (NTNU),Institute of Clinical Medicine
[14] Children’s Clinic,undefined
[15] St. Olavs Hospital,undefined
[16] Trondheim University Hospital,undefined
[17] Oslo University Hospital - Rikshospitalet,undefined
[18] University of Oslo,undefined