1. Department of Internal Medicine; Erasmus Medical Centre; Rotterdam The Netherlands
2. Department of Psychiatry; Erasmus Medical Centre; Rotterdam the Netherlands
3. Department of Public Health and Primary Care; Academic Centre for Nursing and Midwifery; KU Leuven - University of Leuven; Leuven Belgium
4. Heart Transplant Program; Department of Cardiovascular Sciences; University Hospitals of Leuven; Leuven Belgium
5. Psychiatry and Health Psychology Unit; Centro Hospitalar do Porto; Porto Portugal
6. Guy's and St Thomas’ NHS Foundation Trust and King's College London; London UK
7. Hepato-Biliar-Pancreatic and Transplantation Center; Hospital Curry Cabral; Lisbon Portugal
8. Department for Psychosomatic Medicine; Charité-Universitätsmedizin Berlin; Berlin Germany