1. Faculty of Medicine and Health Sciences; Department of Neuromedicine and Movement Science; Norwegian University of Science and Technology (NTNU); Trondheim Norway
2. Department of Radiology and Nuclear Medicine; St. Olav′s Hospital; Trondheim University Hospital; Trondheim Norway
3. Department of Neurology; St Olav′s Hospital; Trondheim University Hospital; Trondheim Norway
4. Department of Pharmacology and Clinical Neurosciences; Division of Neuro, Head and Neck; Umeå University Hospital; Umeå Sweden