1. Second Department of Cardiology, General Hospital "Hippokration", Aristotle University of Thessaloniki, Thessaloniki, Greece
2. Second Propedeutic Department of Internal Medicine, General Hospital "Hippokration", Aristotle University of Thessaloniki,
Thessaloniki, Greece
3. Faculty of Medicine, Primary Health Care Center, University of Montenegro, Podgorica, Montenegro;
4. Department
of Health Promotion, Mother and Child Care (Promise), School of Medicine, Internal Medicine and Medical Specialties,
University of Palermo, Palermo, Italy