1. Institute of Clinical Medicine; University of Oslo; Oslo Norway
2. Department of Research and Education; Oslo University Hospital - Rikshospitalet; Oslo Norway
3. Department of Psychosomatic Medicine; Oslo University Hospital - Rikshospitalet; Oslo Norway
4. Department of Cardiology; Oslo University Hospital - Rikshospitalet; Oslo Norway
5. The Intervention Centre; Oslo University Hospital - Rikshospitalet; Oslo Norway
6. Department of Psychiatry; University of Pittsburgh School of Medicine; Pittsburgh PA USA
7. Department of Cardiothoracic Surgery; Oslo University Hospital - Rikshospitalet; Oslo Norway
8. Department of Psychology; University of Oslo; Oslo Norway