1. Karl Landsteiner Institute of Outpatient Rehabilitation Research, Vienna, Austria
2. Karl Landsteiner Privatuniversität für Gesundheitswissenschaften, Krems, Austria
3. Department of Physical Medicine, Rehabilitation and Occupational Medicine, Vienna Medical University, Vienna, Austria
4. Department of Psychology, Harvard University, Cambridge, MA, USA
5. Department of Medical Psychology and Medical Sociology, Ruhr University of Bochum, Bochum, Germany
6. Department of Psychology, University of Southern Denmark, Odense, Denmark