1. a Cardiac and Thoracic Surgical Unit, Department of Medicine , Flinders Medical Centre and Flinders University , Adelaide, South Australia, Australia
2. b School of Psychology , The University of Adelaide , Adelaide, South Australia, Australia
3. c Discipline of Psychiatry , The University of Adelaide , Adelaide, South Australia, Australia
4. d Center of Research on Psychology in Somatic diseases (CoRPS) , Tilburg University , Tilburg, The Netherlands