- Correspondence to Dr Dominic Wilkinson, Oxford Uehiro Centre for Practical Ethics, Suite 8, Littlegate House, St Ebbes St, Oxford OX1 1PT, UK;
- Received 7 July 2016
- Revised 1 September 2016
- Accepted 8 September 2016
- Published in print 1 April 2017.
- Published online 22 March 2017.
- Published first 12 October 2016.
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