Affiliations

• ¹ Nuffield Department of Primary Care Health Sciences (Stevens, Evans, Oke, Hobbs, McLellan, Perera), University of Oxford, Oxford, UK; The African Centre for Epistemology and Philosophy of Science (Smart), University of Johannesburg, Auckland Park, South Africa; Patient and Public Involvement Advisor to University of Oxford (Holloway, Judd), Oxford, UK; Centre for Academic Primary Care (Horwood), Population Health Sciences, Bristol Medical School, University of Bristol; National Institute for Health Research Collaboration for Leadership in Applied Health Research and Care West (Horwood) at University Hospitals Bristol NHS Foundation Trust, Bristol, UK; Health Services Research Unit (Locock), University of Aberdeen, Scotland richard.stevens@phc.ox.ac.uk.
• ² Nuffield Department of Primary Care Health Sciences (Stevens, Evans, Oke, Hobbs, McLellan, Perera), University of Oxford, Oxford, UK; The African Centre for Epistemology and Philosophy of Science (Smart), University of Johannesburg, Auckland Park, South Africa; Patient and Public Involvement Advisor to University of Oxford (Holloway, Judd), Oxford, UK; Centre for Academic Primary Care (Horwood), Population Health Sciences, Bristol Medical School, University of Bristol; National Institute for Health Research Collaboration for Leadership in Applied Health Research and Care West (Horwood) at University Hospitals Bristol NHS Foundation Trust, Bristol, UK; Health Services Research Unit (Locock), University of Aberdeen, Scotland.