1. Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
2. Department of Physiotherapy, University College of Northern Denmark, Aalborg, Denmark
3. Department of Occupational therapy and Physiotherapy, Aalborg University Hospital, Denmark
4. Centre for Clinical Research, North Denmark Regional Hospital, Hjoerring, Denmark
5. Department of Materials and Production, Aalborg University, Aalborg, Denmark