1. Erasmus University Medical Centre, Thoraxcenter; Rotterdam The Netherlands
2. Andreas Gruentzig Cardiovascular Center, Emory University School of Medicine; Atlanta United States
3. Academic Medical Center-University of Amsterdam; Amsterdam The Netherlands
4. Leiden University Medical Center; Leiden The Netherlands
5. University College of London Hospitals; London United Kingdom
6. Copenhagen University Hospital; Copenhagen Denmark
7. Fujita Health University Hospital; Toyoake Japan
8. Charite Universitätsmedizin Berlin; Berlin Germany
9. Yamaguchi University; Yamaguchi Japan
10. Department of Cardiovascular Surgery; University Hospital Zürich; Switzerland
11. Bern University Hospital; Bern Switzerland
12. Ospedali Riuniti di Bergamo; Bergamo Italy
13. Albert Einstein College of Medicine; Montefiore Medical Center; NY
14. International Centre for Circulatory Health, Imperial College; London United Kingdom