1. Cardiology Department, University Hospital of Pisa, Via Paradisa 2, 56124, Pisa, Italy
2. Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, 413 45 Goteborg, Sweden
3. Heart Center Brandenburg in Bernau , Department of Cardiology and Medical School Brandenburg, Ladeburger Str. 17m, 16321 Bernau b. Berlin, Germany
4. Arrhythmias Unit, Department of Cardiology, La Timone University Hospital, CHU La Timone, 265 Rue Saint Pierre, 13005 Marseille, France
5. Department of Cardiology, Medical University of Lublin, ul. Jaczewskiego 8, 20954 Lublin, Poland
6. Cardiology Department, 6th Floor East Wing, Guy’s & St Thomas’ Hospitals, Westminster Bridge Rd, London, SE1 7EH, UK
7. European Society of Cardiology, The European Heart House, Les Templiers, 2035 route des colles, CS 80179 Biot, 06903 Sophia Antipolis Cedex, France
8. ANMCO Research Center, Via La Marmora 34, 50121 Firenze, Italy
9. Division of Cardiology, Fondazione Cardiocentro Ticino, Via Tesserete 48, 6900 Lugano, Switzerland
10. Department of Cardiology, Asklepios Klinik St. Georg, Lohmühlenstr. 5, 20099 Hamburg, Germany
11. Department of Cardiology, Institution of Medical Science, Uppsala University, S-75185 Uppsala, Sweden