aDepartment of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy

bDepartment of Cardiology, University Hospital ‘Dr Dragisa Misovic – Dedinje’, Heroja Milana Tepica 1, Belgrade, Serbia

Correspondence to Professor Cesare Cuspidi, Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy. E-mail: [email protected]