1 Department of Health Sciences, Hull York Medical School, University of York, York; Institute of Health Informatics, University College London, London.
2 Ridgmount Practice and the Lawson Practice, London; Quality Improvement Clinical Lead, Central Camden Primary Care Network, PPI STIMULATE-ICP, London.
3 Consultant Respiratory Physician and Deputy Clinical Divisional Director for Medical Specialities, University College London Hospital, London.
4 Department of Primary Care and Mental Health, University of Liverpool, Liverpool; Academic Associate GP, Brownlow Health, Liverpool; National Institute of Health and Care Research Applied Research Collaboration North West Coast, Liverpool.