1 Department of Music Science and Art, University of Macedonia, Salonica, Greece.
2 1st Department of Cardiology, Nikea General Hospital, Piraeus, Greece.
3 Department of Cardiology, University of Medicine and Pharmacy "Carol Davila" - Euroecolab, Emergency Institute for Cardiovascular Diseases "Prof. Dr C. C. Iliescu", Sos. Fundeni 258, 022328 Bucharest, Romania.