- Correspondence to Dr Peter Tammes, University of Bristol, Centre for Academic Primary Care (CAPC), School of Social and Community Medicine (SSCM), Canynge Hall, 39 Whatley Road, Bristol BS8 2PS, UK;
- Received August 26, 2015
- Revised April 21, 2016
- Accepted May 14, 2016
- First published June 17, 2016.
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