1. Department of Public Health and Clinical Medicine, Sunderby Research Unit Umeå University Umeå Sweden
2. Department of Clinical Sciences Lund, Medicine Lund University Lund Sweden
3. Department of Public Health and Clinical Medicine, Medicine Umeå University Umeå Sweden
4. Department of Community Medicine and Rehabilitation, Geriatric Medicine, Sunderby Research Unit Umeå University Umeå Sweden
5. Department of Clinical Sciences, Neurology Lund University Lund Sweden
6. Farr Institute of Health Informatics Research University College London London UK
7. Department of Statistics, Umeå School of Business, Economics and Statistics Umeå University Umeå Sweden