1. The University of Manchester Department of Public Health, School of Health Sciences, Faculty of Biology, Medicine and Health, , Manchester M13 9PT, UK
2. The University of Manchester Health Organisation, Policy and Economics (HOPE), Centre for Primary Care Research, School of Health Sciences, Faculty of Biology, Medicine and Health, , Manchester M13 9PL, UK
3. University of Manchester Institute of Health Policy and Management, Alliance Manchester Business School, , Manchester M13 9PT, UK
4. The University of Sheffield , Management School, Sheffield, South Yorkshire, S10 2JA, UK
5. The University of Manchester The patient and public involvement and engagement group at The Centre for Primary Care and Health Services Research (Primer), , Manchester, M13 9PL, UK