1 J. de Vries, MSc, Department of Neuroscience, Erasmus MC, Rotterdam, the Netherlands, and Department of Physical Therapy, Rotterdam University of Applied Sciences, Rotterdam, the Netherlands.
2 B.K. Ischebeck, MSc, Department of Neuroscience, Erasmus MC, and Spine and Joint Centre, Rotterdam, the Netherlands.
3 L.P. Voogt, PhD, Department of Physical Therapy, Rotterdam University of Applied Sciences.
4 M. Janssen, MSc, Department of Neuroscience, Erasmus MC.
5 M.A. Frens, PhD, Department of Neuroscience, Erasmus MC, and Erasmus University College, Rotterdam, the Netherlands.
6 G-J. Kleinrensink, PhD, Department of Neuroscience, Erasmus MC.
7 J.N. van der Geest, PhD, Department of Neuroscience, Erasmus MC, PO Box 2040, 3000 CA Rotterdam, the Netherlands.