1 Department of Cardiology, Arrhythmia Section, University General Hospital of Castellón, 128, 12004, Benicasim Avenue Castellón, Valencian Community, Spain.
2 Predepartmental Unit of Medicine, Universitat Jaime I, Castellón, Spain.
3 Department of Cardiology, Arrhythmia Section, University Hospital "La Fe", Valencia, Spain.
4 Department of Cardiology, Hospital Vithas Castellón, Castellón, Spain.