1Department of Cardiology, Castle Hill Hospital, Kingston-upon-Hull, United Kingdom
2Department of Cardiology, Hôpital Pontchaillou, Rennes, France
3Klinik III für Innere Medizin der, Universität zu Köln, Cologne, Germany
4University of Birmingham, Edgbaston, United Kingdom
5Nouvelles Cliniques Nantaises, Nantes, France
6Division of Cardiology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
7Istituto di Ricovero e Cura a Carattere Scientifico Policlinico San Matteo, Pavia, Italy