1. Närhälsan Research and Development Primary Health Care, Region Västra Götaland, Gothenburg, Sweden;
2. Department of Medical and Health Sciences, Division of Physiotherapy, Linköping University, Linköping, Sweden;
3. Department of Health and Rehabilitation, The Sahlgrenska Academy, Unit of Physiotherapy, Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden