- Correspondence to Dr Leah Bowen, Centre for Academic Primary Care, School of Social and Community Medicine, University of Bristol, Canynge Hall, 39 Whatley Road, Bristol BS8 2PS, UK;
- Received 21 July 2015
- Revised 30 June 2016
- Accepted 8 July 2016
- Published online 22 January 2017.
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