1. Applied Social and Health Psychology, Department of Psychology, University of Zurich, Binzmuehlestrasse 14/Box 14, 8050 Zurich, Switzerland
2. University Research Priority Program “Dynamics of Healthy Aging”, University of Zurich, Stampfenbachstrasse 73l, 8006 Zurich, Switzerland
3. Swiss Paraplegic Research, Guido A. Zaech-Strasse 4, 6207 Nottwil, Switzerland