1. Institute of Medical Biostatistics, Epidemiology, and Informatics (IMBEI); University Medical Centre Mainz; Mainz Germany
2. University Cancer Centre; University Medical Centre Mainz; Mainz Germany
3. Department of Medical Psychology and Medical Sociology; University Medical Centre Leipzig; Leipzig Germany
4. Department of Psychosomatic Medicine and Psychotherapy; University Medical Centre Leipzig; Leipzig Germany
5. Department of Medical Sociology; University of Halle; Halle Germany
6. Department of Obstetrics and Gynaecology; University Medical Centre Leipzig; Leipzig Germany
7. Department of Surgery; University Medical Centre Leipzig; Leipzig Germany
8. Department of Otolaryngology; University Medical Centre Leipzig; Leipzig Germany
9. Department of Radiation-Oncology; University Medical Centre Leipzig; Leipzig Germany
10. Department of Neurosurgery; University Medical Centre Leipzig; Leipzig Germany
11. Department of Gastroenterology; University Medical Centre Leipzig; Leipzig Germany
12. Department of Maxillofacial Surgery; University Medical Centre Leipzig; Leipzig Germany
13. Department of Urology; University Medical Centre Leipzig; Leipzig Germany
14. Department of Pneumology; University Medical Centre Leipzig; Leipzig Germany
15. Department of Medical Oncology; University Medical Centre Leipzig; Leipzig Germany
16. Division of Hepatology; University Medical Centre Leipzig; Leipzig Germany