1. Cardiology Department University Hospital Ramón y Cajal Madrid Spain
2. Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV) Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) Madrid Spain
3. Cardiology Department Santa Maria University Hospital (CHULN), Lisbon Academic Medical Center Lisbon Portugal
4. Research and Development Department Biosense Webster, Johnson & Johnson Yokneam Israel