- Correspondence to Dr Allison Streetly, Division of Health & Social Care Research Faculty of Life Sciences & Medicine, King’s College London, London SE1 1UL, UK;
- Received 17 April 2017
- Revised 22 September 2017
- Accepted 25 September 2017
- Published in print 2 November 2017.
- Published online 5 November 2017.
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