- Correspondence to Dr Lorelei Jones, Applied Health Research, University College London, Gower St, London WC1E 6BT, UK;
- Received 21 December 2016
- Revised 24 May 2017
- Accepted 8 June 2017
- Published in print 1 December 2017.
- Published online 20 November 2017.
- Published first 8 July 2017.
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