1. Peter L. Reichertz Institute for Medical Informatics of TU Braunschweig and Hannover Medical School, Hannover, Germany
2. Clinic of Cardiac and Thoracic Surgery, University Hospital Magdeburg, Magdeburg, Germany
3. Department of Traumatology, University Hospital Zürich, Zürich, Switzerland
4. Department of Cardiothoracic Surgery, Jena University Hospital, Friedrich Schiller University of Jena, Jena, Germany