1. Cardiology Department, Onassis Cardiac Surgery Center, Athens, Greece
2. Department of Nutrition and Dietetic, Harokopio University, Athens, Greece
3. Molecular Immunology Laboratory, Onassis Cardiac Surgery Center, Athens, Greece
4. Department of Clinical Biochemistry (Vascular Disease Prevention Clinics), Royal Free Hospital campus, University College London Medical School, University College London (UCL), London, United Kingdom
5. Thriasio Hospital, Elevsina, Greece
6. Second Propedeutic Department of Internal Medicine, Medical School, Aristotle University of Thessaloniki, Hippocration Hospital, Thessaloniki, Greece