1. St. Olavs University Hospital, Clinic of Physical Medicine and Rehabilitation, Department of Spinal Cord Injuries, Trondheim, Norway
2. Norwegian University of Science and Technology, Faculty of Medicine, Department of Neuromedicine and Movement Science, Trondheim, Norway
3. K.G. Jebsen Center of Exercise in Medicine, Department of Circulation and Medical Imaging Norwegian University of Science and Technology, Trondheim, Norway
4. Norwegian University of Science and Technology, Faculty of Medicine, Department of Circulation and Imaging, Trondheim, Norway
5. Hokksund Medical Rehabilitation Centre, Hokksund, Norway
6. Telemark University College, Department of Sports and Outdoor Life Studies, Bø, Norway
7. Department of Clinical Medicine, Neuromuscular Diseases Research Group, University of Tromsø, Norway