1. University of Regensburg Medical Centre; Department of Cardiothoracic Surgery; Regensburg; Germany
2. University of Applied Sciences Regensburg; FB Maschinenbau; Regensburg; Germany
3. Brno University of Technology; Institute of Solid Mechanics; Mechatronics and Biomechanics; Brno; Czech Republic
4. University of Regensburg, Krankenhaus Barmherzige Brüder, Klinik St. Hedwig; Department of Obstetrics and Gynecology; Regensburg; Germany
5. Technical University Munich, Frauenklinik (OB/GYN); Munich; Germany