1. Second Department of Neurology (L.P., A.T., S.T., C.Z., E.B., M.C., S.G., G.T.), Attikon University Hospital, School of Medicine, National and Kapodistrian University of Athens, Greece.
2. First Department of Cardiology, Hippokration Hospital, Athens Medical School (P.D., K. Tsioufis), National and Kapodistrian University of Athens, Greece.
3. Second Department of Cardiology (P.F., K. Tympas, P.N., S.D., G.F.), Attikon University Hospital, School of Medicine, National and Kapodistrian University of Athens, Greece.
4. Third Department of Cardiology, Aristotle University of Thessaloniki, Greece (G.G.).
5. Department of Cardiology, General Hospital of Athens “Georgios Gennimatas,” Greece (C.K.).
6. Department of Cardiology, Medical Institution Military Shareholder Fund, Athens, Greece (E.A.).
7. Department of Hygiene, Epidemiology and Medical Statistics, Medical School (G.M.), National and Kapodistrian University of Athens, Greece.
8. Department of Neurology, University of Tennessee Health Science Center, Memphis (G.T.).