2 Therapeutic Department, General Hospital Alexandra, Athens, Greece.
3 Medical Department of Internal Medicine, Pfizer Hellas, Athens, Greece.
4 Cardiology Department, Thriasio General Hospital of Elefsina, Athens, Greece.
5 Cardiology Department, General Hospital Agia Olga, Athens, Greece.
6 Department of Cardiovascular Prevention and Research Unit, Clinic and Laboratory of Pathophysiology, Medical School, National and Kapodistrian University of Athens, Greece.
7 Department of Internal Medicine of the General Hospital of Ioannina "G Hatzikostas", Ioannina, Greece.
8 Department of Cardiology, General Hospital of Kozani, Kozani, Greece.
9 Department of Internal Medicine, General Hospital of Veria, Veria, Greece.
10 Cardiologist, Tinos, Greece.
11 Cardiology Department, University General Hospital Patra, Greece.