1. School of Allied Health Professions, Fontys University of Applied Science, 5631 BN Eindhoven, The Netherlands
2. Tranzo, School of Social and Behavioural Sciences, Tilburg University, 5037 AB Tilburg, The Netherlands
3. Department of Communication, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 8410501, Israel