- Correspondence to Dr Josephine Ocloo, Centre for Patient Safety and Service Quality, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, St Mary's Campus, Room 504, 5th Floor, Norfolk Place, London W2 1PG, UK;
- Received 15 September 2015
- Revised 26 February 2016
- Accepted 29 February 2016
- Published online 19 July 2016.
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