1. Department of Operative Dentistry and Periodontology Martin Luther‐University Halle‐Wittenberg Halle (Saale) Germany
2. Department of Internal Medicine III Heart Centre of the University Clinics Halle (Saale) Martin‐Luther‐University Halle‐Wittenberg Halle (Saale) Germany
3. Department of Cardiology Paracelsus Harz‐Clinic Bad Suderode Quedlinburg Germany
4. Department of Cardiothoracic Surgery Heart Centre of the University Clinics Halle (Saale) Martin‐Luther‐University Halle‐Wittenberg Halle (Saale) Germany