1. Division of Child and Adolescent Health, Department of Paediatrics, University Hospital of North Norway, Tromsø, Norway;
2. Paediatric Research Group, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway;
3. Department of Urology and Endocrine Surgery, University Hospital of North Norway, Tromsø, Norway;
4. Division of Child and Adolescent Health, Department of Child and Adolescent Psychiatry, University Hospital of North Norway, Tromsø, Norway;
5. Vega Health Center, Vega, Norway;
6. Evenes Medical Centre, Evenes, Norway