1. Im Neuenheimer Feld 410, Heidelberg University Hospital; Department of General Internal Medicine and Psychosomatics; Heidelberg Germany D-69120
2. Faculty of Medicine and Medical Center - University of Freiburg; Institute for Medical Biometry and Statistics; Stefan-Meier-Str. 26 Freiburg Germany 79104
3. University Hospital Düsseldorf; Psychosomatic Medicine and Psychotherapy; Moorenstrasse 5 Düsseldorf Germany 40225
4. Thoraxklinik at Heidelberg University Hospital; Department of Thoracic Oncology; Heidelberg Germany D-69120