1. Department of Cardiology University Clinical Hospital Center “Dr. Dragisa Misovic ‐ Dedinje” Belgrade Serbia
2. Department of Internal Medicine and Cardiology Charité – Universitätsmedizin Berlin Berlin Germany
3. Clinical Research Unit University of Milan‐Bicocca and Istituto Auxologico Italiano IRCCS Meda Italy
4. Department of Advanced Biomedical Sciences Federico II University Hospital Naples Italy