- Correspondence to Dr Michelle Taylor, Current address: School of Social & Community Medicine, Oakfield House, Oakfield Grove, Bristol, BS8 2BN, UK;
- Received 10 October 2016
- Revised 10 March 2017
- Accepted 19 April 2017
- Published in print 1 August 2017.
- Published online 13 July 2017.
- Published first 7 June 2017.
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