- Correspondence to Dr Edward Etchells, Department of Medicine, Sunnybrook Health Sciences Centre, Centre for Quality Improvement and Patient Safety, University of Toronto, Toronto, ON M5S, Canada;
- Received 29 May 2017
- Revised 3 October 2017
- Accepted 15 October 2017
- Published in print 1 January 2018.
- Published online 19 December 2017.
- Published first 2 November 2017.
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