1. Division of Physiotherapy, Department of Neurobiology, Health Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden
2. Division of Physiotherapy, Department of Orthopaedics, Danderyd Hospital, Stockholm, Sweden
3. School of Health and Welfare, Dalarna University, Falun, Sweden
4. Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden