1. School of Applied Medical Sciences and Sports Studies, University of Ulster at Jordanstown, N Ireland
2. Physiotherapy Department, Altnagelvin Hospitals Health and Social Services Trust, Londonderry, N Ireland
3. Nursing Department, Altnagelvin Hospitals Health and Social Services Trust, Londonderry, N Ireland
4. Rehabilitation Sciences Research Group, School of Rehabilitation Sciences, University of Ulster at Jordanstown, N Ireland