1. Department of Internal Medicine III, Cardiology, Goethe-University Frankfurt, Germany.
2. Institute for Clinical Psychology and Psychotherapy, Technische Universität Dresden, Germany.
3. Max Planck Institute of Psychiatry, Munich, Germany.
4. Department of Medicine I, University of Schleswig-Holstein, Campus Lübeck, Germany.
5. Cardiology Practice and Hospital, Munich, Germany.
6. Synlab Center of Laboratory Diagnostics, Heidelberg, Germany.