1 Department of Plastic Surgery and Reconstructive Surgery, University Hospital of North Norway, Tromsø, Norway; Department of Clinical Medicine, UiT the Arctic University of Norway, Tromsø, Norway; Department of Neurosurgery, University Hospital of North Norway, Tromsø, Norway; Department of Microbiology, University Hospital of North Norway, Tromsø, Norway; and Department of Radiology, University Hospital of North Norway, Tromsø, Norway.