1. Section of Health Care Research and Rehabilitation Research, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
2. German Statutory Pension Insurance Rhineland Palatinate, Clinic for Psychosomatic Rehabilitation, Boppard-Bad Salzig, Germany
3. German Federal Pension Insurance, Speyer, Germany
4. Department of Psychology and Health, SRH – The Mobile University, Riedlingen, Germany
5. Section of Rehabilitation Psychology and Psychotherapy, Department of Psychology, University of Freiburg, Germany