1. Department of Cardiology; Castle Hill Hospital, University of Hull; Kingston upon Hull UK
2. University of Birmingham; Edgbaston UK
3. Klinik III für Innere Medizin der Universität zu Köln; Cologne Germany
4. Nouvelles Cliniques Nantaises; Nantes France
5. University of Lausanne; Switzerland
6. GVM Care and Research, Maria Cecilia Hospital; Cotignola Italy
7. Département de Cardiologie; Hôpital Pontchaillou; Rennes France