1. Department of Cardiology, Larnaca General Hospital, Larnaca, Cyprus
2. University of Nicosia Medical School, Nicosia, Cyprus
3. Second Department of Cardiology, General Hospital of Athens “Evangelismos”, Athens, Greece
4. Department of Cardiology, University of East Anglia, Norwich, UK
5. Department of Cardiology, Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease Tianjin Institute of Cardiology Second Hospital of Tianjin Medical University Tianjin, PR China
6. Kent and Medway Medical School, Canterbury, UK
7. Onassis Cardiac Surgery Centre, Athens, Greece
8. Department of Anatomy, Histology and Embryology, Medical School, University of Ioannina, Ioannina, Greece