1. Royal Brompton & Harefield Hospitals, Heart Division, Guy Scadding Building, Dovehouse Street, Imperial College, London SW3 6LY, UK
2. Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland
3. CardioCentro, Lugano, Switzerland
4. University of Bern, Bern, Switzerland
5. St. Georges University and Imperial College, London, UK
6. Angiology, Inselspital Bern, Bern, Switzerland
7. Institute for Medical Informatics, Biometry and Epidemiology, Medical Faculty of the University Duisburg-Essen, Duisburg-Essen, Germany
8. Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany