- Correspondence to Anna Verey, King’s Centre for Military Health Research, King’s College London, Weston Education Centre, London SE5 9RJ, UK;
- Received 29 September 2016
- Revision received 30 June 2017
- Accepted 30 June 2017
- Published in print 1 December 2017.
- Published online 4 December 2017.
- Published first 9 October 2017.
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