1. Institute of Psychology Heidelberg University Heidelberg Germany
2. Division of Physical Activity Prevention and Cancer, National Center for Tumor Diseases (NCT) Heidelberg and German Cancer Research Center (DKFZ) Heidelberg Germany
3. Division of Medical Oncology National Center for Tumor Diseases (NCT) Heidelberg and University Clinic Heidelberg Heidelberg Germany
4. Department of Psychosomatic Medicine and Psychotherapy, University Medical Center Mainz Johannes Gutenberg University Mainz Mainz Germany