1. Cardiology Department, Athens Naval Hospital , Dinokratous 70, Athens 11521 , Greece
2. First Cardiology Department, AHEPA University Hospital, Aristotle University of Thessaloniki , S. Kiriakidi 1, Thessaloniki 54636 , Greece
3. Department of Endocrinology, Diabetes and Metabolism, Centro Hospitalar Universitário de São João , Alameda Hernâni Monteiro, Porto 4200-319 , Portugal
4. Unit of Cardiovascular Research and Development—Unic@RISE, Department of Surgery and Physiology, Faculty of Medicine of University of Porto , Alameda Hernâni Monteiro, Porto 4200-319 , Portugal