1. Department of Physical Therapy and Rehabilitation Science; University of Maryland School of Medicine; Baltimore MD 21201 USA
2. Université de Toulon; La Garde 83957 France
3. Aix-Marseille Université; CNRS, ISM UMR 7287 Marseille 13288 France
4. Department of Physical Therapy and Human Movement Sciences; Northwestern University Medical School; Chicago IL 60611 USA