Department of Medicine III;
University Clinic Halle (Saale);
Halle;
Germany;
Department of Medicine;
Clinic Grabs;
Grabs;
Switzerland;
Department of Cardiology;
Kerckhoff Heart and Thorax Center;
Bad Nauheim;
Germany;
Department of Medicine II;
Clinic Groß
-Umstadt;
Groß
-Umstadt;
Germany;
Department of Medicine II;
University of Regensburg;
Regensburg;
Germany;
Department of Cardiology;
University of Basel;
Basel;
Switzerland;
University Cardiology Clinic;
Niš
Serbia;
Department of Mathematical Sciences;
University of Kragujevac;
Kragujevac;
Serbia;
Department of Medicine I;
University Clinic of Gieß
en and Marburg;
Gieß
en;
Germany;
Department of Medicine I;
Paracelsus-Harz-Clinic Bad Suderode;
Quedlinburg;
Germany;