- Correspondence to Neil Collishaw, Physicians for a Smoke-Free Canada, 134 Caroline Avenue, Ottawa, Ontario, Canada K1Y 0S9;
- Received 8 December 2015
- Accepted 13 May 2016
- Published in print 1 July 2017.
- Published online 29 June 2017.
- Published first 7 June 2016.
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