- Correspondence to Professor David Hemenway, Harvard Injury Control Research Center, Harvard TH Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA;
- Received 28 June 2016
- Revised 1 September 2016
- Accepted 18 September 2016
- Published in print 1 August 2017.
- Published online 21 July 2017.
- Published first 6 October 2016.
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