1. Rehabilitation Medicine Department, University Hospital of North Staffordshire, Stoke on Trent, UK
2. Department of Pharmacology, National University of Singapore, Singapore
3. Department of Clinical Sciences, Section of Neurology, Lund University, Lund, Sweden
4. Global Health Outcomes Strategy and Research, Allergan Inc, Irvine, CA, USA
5. Division of Rehabilitation and Ageing, University of Nottingham, Nottingham, UK
6. Endpoint Development and Outcomes Assessment, Adelphi Values Ltd, Macclesfield, UK
7. Department of Clinical Neurosciences and Preventive Medicine, Danube University Krems, Krems, Austria
8. Health Sciences Department, University of Warwick, Warwick, UK