1. Laboratory of Epidemiological and Clinical Cardiology, Department of Medical and Surgical Sciences, University of Bologna , Bologna , Italy
2. Clinic for Internal Medicine, University Clinical Hospital Center Bezanijska Kosa , 11000 Belgrade , Serbia
3. Faculty of Medicine, University of Belgrade , 11000 Belgrade , Serbia
4. 1st Cardiology Department, National and Kapodistrian University of Athens , Athens , Greece
5. Biomarkers for Cardiovascular Disease Group, Institut Recerca Sant Pau , Sant Quinti 77-79, 08041 Barcelona , Spain
6. Centro de Investigación Biomédica en Red Cardiovascular (CIBER-CV), Instituto de Salud Carlos III , Av. Monforte de Lemos, 3-5, 28029 Madrid , Spain