1. Department of Psychosomatic Medicine and Psychotherapy; Segeberger Kliniken; Bad Segeberg Germany
2. Department of Psychiatry and Psychotherapy; University Hospital Zurich; University of Zurich; Zurich Switzerland
3. Division of Pulmonology; University Hospital Zurich; University of Zurich; Zurich Switzerland
4. Clinic for Psychotherapy and Psychosomatics Hohenegg; Meilen Switzerland
5. Department of Health Psychology; Medical School Hamburg; Hamburg Germany
6. Department of Human Science; Medical School Hamburg; Hamburg Germany