1. Institute of Applied Health Research, University of Birmingham, Birmingham, UK
2. Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
3. School of Clinical Sciences, University of Bristol, Bristol, UK
4. Primary Care Unit, Strangeways Research Laboratory, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
5. Stroke Research Unit. School of Nursing, University of Central Lancashire, Preston, UK
6. Institute of Clinical Sciences, University of Birmingham, Birmingham, UK
7. Centre for Guidelines, National Institute for Health and Care Excellence, London, UK
8. Bodleian Health Care Libraries, Knowledge Centre, Oxford, UK
9. NIHR UCL Hospitals Biomedical Research Centre, Institute of Cardiovascular Science, University College London, London, UK