1 School of Health and Social Care, University of Greenwich, London, UK. Electronic address: [email protected].
2 Department of Physiotherapy, University of Birmingham, Birmingham, UK.
3 University Psychiatric Centre, KU Leuven, Kortenberg, Department of Neurosciences, Kortenberg, Belgium; Department of Rehabilitation Sciences, KU Leuven, Leuven, Belgium.
4 Physiotherapy Department, Royal Edinburgh Hospital, Edinburgh, UK.
5 Bergen University College, Bergen, Norway.
6 Department of Health Sciences, Division of Physiotherapy, Lund University, Lund, Sweden.