1. Department of Cardiothoracic Surgery, King’s Health Partners, King’s College Hospital, Denmark Hill, London SE5 9RS, UK
2. Department of Internal Medicine, Municipal Hospital, Moltkestrasse 90, 76133 Karlsruhe, Germany
3. Department of Cardiac Surgery, Mid German Heart Centre, University Hospital, Ernst-Grube-Straße 40, 06120 Halle (Saale), Germany
4. Department of Cardiovascular Medicine, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
5. Department of Cardiology, Clinique Pasteur, 45, avenue du Lombez BP 27617, 31076 Toulouse Cedex 3, France
6. Department of Cardiology/Angiology, University Heart Centre, Südring 15, 79189 Bad Krozingen, Germany
7. Department of Cardiac, Thoracic and Vascular Sciences, University Padua, Via 8 febbraio 2, 35122 Padova, Italy
8. Department of Cardiology, CiberCV Hospital Ramon y Cajal, Carretera de Colmenar Viejo KM 9, 28034 Madrid, Spain
9. Department of Cardiology, Hopital Bichat, 46 Rue Henri Huchard, 75018 Paris, France