1. From the Centre for Rehabilitation and Ageing Research
2. From the Departments of Mental Health and Clinical Neurosciences
3. From the School of Medicine, University of Nottingham, Nottingham, England; the Institute of Mental Health, Nottingham Healthcare Trust, Nottingham, England
4. From the Health Division, SINTEF, Trondheim, Norway
5. From the Neurosciences Group, Leeds Teaching Hospital, National Health Service Trust, Leeds, England
6. From the Faculty of Medicine and Health, University of Leeds, Leeds, England
7. From the Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, South Wales, United Kingdom
8. From the Preventive Neurology Unit, Queen Mary University, London, England