1. O. Verschuren, PhD, Brain Center Rudolf Magnus and Center of Excellence for Rehabilitation Medicine, University Medical Center Utrecht and De Hoogstraat Rehabilitation, Rembrandtkade 10, 3583TM, Utrecht, the Netherlands. Mailing address: Rehabilitation Centre De Hoogstraat, Rembrandtkade 10, 3583 TM Utrecht, the Netherlands.
2. J. Darrah, PhD, Department of Physical Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta, Canada.
3. I. Novak, PhD, Cerebral Palsy Alliance, School of Medicine, University of Notre Dame Australia, Darlinghurst, New South Wales, Australia.
4. M. Ketelaar, PhD, Brain Center Rudolf Magnus and Center of Excellence for Rehabilitation Medicine, University Medical Center Utrecht and De Hoogstraat Rehabilitation.
5. L. Wiart, PhD, Glenrose Rehabilitation Hospital, Edmonton, Alberta, Canada, and Department of Physical Therapy, University of Alberta.