- Correspondence to Sarah Vercruysse, Faculty of Kinesiology and Rehabilitation Sciences, Department of Rehabilitation Sciences, KU Leuven, Tervuursevest 101, Leuven 3001, Belgium;
- Received July 18, 2013
- Revised September 23, 2013
- Accepted December 5, 2013
- First published January 6, 2014.
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