1. Medical Faculty, National Center for Tumor Diseases (NCT/UCC), Technical University Dresden, 01307 Dresden, Germany
2. Department of Psychosomatic Medicine and Psychotherapy, Comprehensive Cancer Center Ulm (CCCU), Ulm University Hospital, 89070 Ulm, Germany
3. Hamburg Hubertus Wald—University Cancer Center (CCC), University Clinic Centre, 20251 Hamburg, Germany
4. Department Medical Psychology and Psychotherapy, Comprehensive Cancer Center Mainfranken, University of Würzburg, 97080 Würzburg, Germany
5. Department Internal Medicine and Psychosomatics, University Clinic Centre Heidelberg, 69120 Heidelberg, Germany
6. Section of Psychosomatic Medicine, Psychotherapy and Psychooncology, Department of Internal Medicine II, Julius-Maximilian University Würzburg, 97080 Würzburg, Germany
7. Department of Psychosomatic Medicine and Psychotherapy, General Hospital Nuremberg, Paracelsus Medical University, 90419 Nuremberg, Germany
8. Department Psychosomatic Medicine and Psychotherapy, Comprehensive Cancer Center Essen (WTZ) and LVR University Hospital, University of Duisburg-Essen, 45122 Essen, Germany
9. Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität and Berlin Institute of Health, 10117 Berlin, Germany
10. Department Psychosomatic Medicine, University Clinic Centre Erlangen, 91054 Erlangen, Germany
11. Department Psychosomatic Medicine, University Clinic Centre Bonn, 53127 Bonn, Germany
12. Faculty of Medicine & University Hospital, Department Psychosomatics and Psychotherapy, University of Cologne, 50937 Köln, Germany
13. University Cancer Center, University Clinic Centre Frankfurt, 60590 Frankfurt, Germany
14. Protestant College of Darmstadt, University of Applied Sciences, 64293 Darmstadt, Germany
15. Faculty of Medicine and Medical Center University of Freiburg, Department Self-Help Research, Comprehensive Cancer Center, 79106 Freiburg, Germany