- Correspondence to Mr Rasmus Oestergaard Nielsen, Section of Sport Science, Department of Public Health, Aarhus University, Dalgas Avenue 4, DK-8000 Aarhus C, Denmark:
- Received January 17, 2013
- Revised March 26, 2013
- Accepted May 15, 2013
- First published June 13, 2013.
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