1. Centre of Excellence in Product & Transport Design, Department of Industrial Design, Coventry University, Coventry CV1 5FB, UK.
2. Regional Posture and Mobility Service, Birmingham Community Healthcare NHS Trust (BCHNT), 91 Oak Tree Lane, Selly Oak, Birmingham, B29 6JA
3. Health Design & Technology Institute, Coventry University, Coventry CV1 5FB, UK.
4. Faculty of Engineering and Computing, Coventry University, Coventry CV1 5FB, UK.