1. Department of General Internal Medicine & Psychosomatics; Heidelberg University Hospital; D-69120 Heidelberg Germany
2. Department of Urology; University Hospital Carl Gustav Carus; Technical University of Dresden; Dresden 01307 Germany
3. Thoraxklinik-Heidelberg gGmbH; Heidelberg University Hospital; 69126 Heidelberg Germany
4. Heidelberg University Hospital; National Center for Tumor Diseases Heidelberg; 69120 Heidelberg Germany
5. Ingham Institute for Applied Medical Research; The University of New South Wales; Liverpool BC NSW 1871 Australia
6. Department of Psychosomatic Medicine and Psychotherapy; Klinikum rechts der Isar der TU München; 81675 München Germany