- Correspondence to Dr Jackie L Whittaker, Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, 2500 University Dr NW, Calgary, Alberta, Canada T2N 1N4;
- Received 1 October 2014
- Revised 9 March 2015
- Accepted 11 March 2015
- Published online 1 June 2015.
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