- Correspondence to Professor Denise Kendrick, Division of Primary Care, School of Medicine, University of Nottingham, Tower Building, University Park, Nottingham NG7 2RD, UK;
- Received 26 August 2015
- Revised 24 March 2016
- Accepted 20 April 2016
- Published in print 1 April 2017.
- Published online 22 March 2017.
- Published first 4 November 2016.
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