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History
- Received April 14, 2020
- Revision requested June 4, 2020
- Accepted July 10, 2020
- Published online January 28, 2021.
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- Previous version (November 30, 2020 - 10:30).
- Previous version (January 11, 2021 - 16:05).
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© The Authors http://creativecommons.org/licenses/by/4.0/This article is Open Access: CC BY 4.0 licence (http://creativecommons.org/licences/by/4.0/).
Author Information
- Ashley Kieran Clift, MA, MBBS, Clinical research fellow
- Carol AC Coupland, PhD, Professor of medical statistics in primary care
- Julia Hippisley-Cox, MD
- Professor of Clinical Epidemiology and Primary Care Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford.
- Address for correspondence
Ashley Kieran Clift, Nuffield Department of Primary Care Health Sciences, Radcliffe Primary Care Building, Radcliffe Observatory Quarter, Woodstock Road, Oxford, OX2 6GG, UK. Email: ashley.clift{at}phc.ox.ac.uk