1. Cardiothoracic Surgery Department Centro Hospitalar de Vila Nova de Gaia/Espinho Vila Nova de Gaia Portugal
2. BioVentrix Inc. San Ramon California USA
3. Private Practice for Internal Medicine and Cardiology Frankfurt am Main Germany
4. Kardiologie am Tibarg Hamburg Germany
5. Department of Cardiac Surgery Asklepios Hospital Harburg Hamburg Germany
6. Department of Cardiology St. Antonius Hospital Nieuwegein Netherlands
7. Department of Cardiothoracic Surgery St. Antonius Ziekenhuis Nieuwegein Netherlands
8. Department of Cardiology, Heart Valve Center University Medical Center Mainz Mainz Germany