1. Department of Medical Psychology and Medical Sociology; University Medical Center Leipzig; Leipzig Germany
2. Department and Outpatient Clinic of Medical Psychology; University Medical Center Hamburg-Eppendorf; Hamburg Germany
3. Department of Psychosomatic Medicine and Psychotherapy; Klinikum rechts der Isar, Technical University Munich; Munich Germany
4. Department of Medical Psychology and Medical Sociology, University Hospital Carl Gustav Carus; Technical University of Dresden; Dresden Germany
5. Department of Stem Cell Transplantation; University Medical Center Hamburg-Eppendorf; Hamburg Germany