- Correspondence to Dr Richard C Franklin, College of Public Health, Medical and Veterinary Sciences, James Cook University, Building 41 Room 213, Townsville, Qld 4811, Australia;
- Received 11 January 2017
- Revised 23 March 2017
- Accepted 17 April 2017
- Published in print 6 May 2017.
- Published online 8 May 2017.
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