[1] Levanger Hospital,Department of Surgery
[2] Nord-Trøndelag Hospital Trust,IKOM Department of Clinical and Molecular Medicine
[3] NTNU,Regional Centre for Child and Youth Mental Health and Child Welfare – Central Norway, Faculty of Medicine, Department of Mental Health, Faculty of Medicine
[4] Norwegian University of Science and Technology,Clinic of surgery
[5] Norwegian University of Science and Technology,undefined
[6] St. Olavs Hospital,undefined
[7] Trondheim University Hospital,undefined