1. Department of Medical Psychology and Psychotherapy, Medical Sociology and Rehabilitation Sciences, Julius-Maximilians-University of W�rzburg, W�rzburg, Germany
2. Rheuma League Niedersachsen, Hannover, Germany
3. Rehabilitation Centre Bad Eilsen, Bad Eilsen, Germany
4. Rehabilitation Centre Bad Aibling, Clinic Wendelstein, Bad Aibling, Germany
5. Rehabilitation Clinic Bad S�ckingen GmbH, Bad S�ckingen, Germany