1. Section of Cardiology, Department of Surgical and Biomedical Sciences; University of Verona; Ospedale Maggiore, Ple Stefani 1 37126 Verona Italy
2. Divisione di Cardiologia; Fondazione Salvatore Maugeri, IRCCS; Veruno Italy
3. Department of Cardiology; The Karoliska Institute, Hospital de Torrevieja; Spain
4. Unità Malattie Cardiovascolari 2; Ospedale Santa Chiara; Pisa Italy
5. Divisione di Cardiologia; Fondazione IRCCS Policlinico S. Matteo; Pavia Italy
6. The George Institute; University of Sydney; Sydney Australia
7. Cleveland Clinic Foundation; Cleveland OH USA
8. Cardiac Investigation Unit; St Vincent's Hospital Melbourne; Melbourne Australia
9. Division of Cardiology, Department of Medicine and Therapeutics; Prince of Wales Hospital, The Chinese University of Hong Kong; Hong Kong China
10. Department of Medicine; FMHS, The University of Auckland; Auckland New Zealand