1 Department of Cardiology, University of Patras Medical School, Rion, Patras, Achaia, Greece Department of Electrophysiology, Queen Elizabeth Hospital, Birmingham, United Kingdom Department of Internal Medicine Department, University Hospital of Patras, Patras, Greece Department of Ophthalmology, Medical School, University of Patras, Patras, Greece Department of Cardiology, Interventional Cardiology Unit, GVM Care & Research Maria Cecilia Hospital, Via Madonna di Genova, 1, 48033 Cotignola RA, Italy Department of Cardiology, University of Patras Medical School, Rion, Patras, Achaia, Greece Department of Cardiology, "Saint Andrews" State General Hospital, Patras, Achaia, Greece Department of Cardiology, Krankenhaus der Barmherzigen Brüder, Trier, Germany Department of Cardiology, University of Patras Medical School, Rion, Patras, Achaia, Greece.