1. Institute of Health Economics, Medical University of Innsbruck, Innsbruck, Austria
2. Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, The Netherlands
3. Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, UK
4. Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
5. Heart and Lung Research Institute, University of Cambridge, Cambridge, UK
6. MRC Biostatistics Unit, School of Clinical Medicine, University of Cambridge, Cambridge, UK
7. Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
8. The George Institute for Global Health, School of Public Health, Imperial College London, London, UK
9. The George Institute for Global Health, University of New South Wales, Sydney, NSW, Australia