1 Department of Internal Medicine, University Hospital Centre Zagreb, School of Medicine, Zagreb University, Kispaticeva 12, Croatia.
2 Klinik und Poliklinik für Kardiologie, Universitätsklinikum Leipzig; Liebigstraße 20, Leipzig, Germany.
3 Unit of Cardiology, Department of Medicine Solna, Karolinska Institute and Karolinska University Hospital, Solnavägen 1, 171 77 Solna; Stockholm, Sweden.
4 Department of Cardiology, Charite Universitätsmedizin Berlin; Berlin Institute of Health (BIH) Hindenburgdamm 30, 12203 Berlin; German Center for Cardiovascular Research (DZHK), partner site Berlin, Germany.