1. Department of Orthopedics, Clinical sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden;
2. Department of Physiotherapy, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden;
3. Department of Physiotherapy, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden;
4. Section of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden