1. Department of Cardiology, Robert Bosch Krankenhaus, Auerbachstr. 110, D-70376 Stuttgart, Germany
2. Cardiovascular Division, Washington University School of Medicine, St Louis, MO, USA
3. Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
4. Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Cardiology Institute, Roma, Italy
5. University of Glasgow, Golden Jubilee National Hospital, Glasgow, UK