1. Euroclinic Hospital, Athens, Greece
2. Internal Medicine, Department of Medicine and Surgery, University of Insubria, ASST-settelaghi, Via Guicciardini 5, 21100 Varese, Italy
3. East Sussex Healthcare NHS Trust, Hastings, UK
4. Department of Nursing, School of Health Sciences Cyprus University of Technology Limassol, Limassol, Cyprus
5. Clinic of Social and Family Medicine, School of Medicine, University of Crete, Crete, Greece
6. Cardiology Department, Hospital Santa Maria, Centro Hospitalar Universitário Lisboa Norte, (CHULN) Lisboa, Lisbon, Portugal
7. Centro Académico de Medicina de Lisboa (CAML) and Centro Cardiovascular da Universidade de Lisboa (CCUL), Faculty of Medicine from University of Lisbon (FMUL), Lisbon, Portugal
8. Division of Cardiac and Vascular Sciences, Molecular and Clinical Sciences Research Institute, St George's University of London, London, UK
9. Geriatric Intensive Care Unit and Geriatric Arrhythmia Unit, Department of Experimental and Clinical Medicine, University of Florence and AOU Careggi, Largo Brambilla 3, 50134 Florence, Italy
10. Section of Geriatrics, Department of Medical Sciences, University of Turin, Città della Salute e della Scienza, Molinette, Turin, Italy
11. Section of Pharmacology, Department of Safety and Bioethics, Catholic University School of Medicine, Rome, Italy
12. Department of Cardiology, Copenhagen University Hospital Amager & Hvidovre, Kettegaard Alle 30, 2650 Copenhagen, Denmark
13. University of Liège, Liège, Belgium
14. Department of Cardiology, University Heart Center Zurich, University Hospital and University of Zürich, Rämistrasse 100, 8091Zurich, Switzerland
15. Department of Cardiology, Duputren University Hospital, Limoges, France
16. LARC—Laboratorio Analisi e RIcerca Clinica, C.so Venezia 10, 10155 Turin, Italy