1. Institute for Quality Assurance in Prevention and Rehabilitation (iqpr
GmbH), German Sport University Cologne, Cologne, Germany
2. Institute of Social Medicine and Epidemiology, University of Luebeck,
Luebeck, Germany
3. Department of Rehabilitation, German Federal Pension Insurance, Berlin,
Germany
4. Berlin Factory for Social Research, Berlin, Germany
5. Institut for Employment Research, Nuremberg, Germany
6. Department for Rehabilitation Research, German Federal Pension
Insurance, Berlin, Germany