1. HGC GesundheitsConsult GmbH, Duesseldorf, Germany
2. Robert-Bosch-Krankenhaus, Zentrum für Innere Medizin III Kardiologie, Auerbachstraße 110, 70376 Stuttgart, Germany
3. Medtronic International Trading Sàrl, Route du Molliau 31, 1131 Tolochenaz, Switzerland
4. Medtronic GmbH, Earl-Bakken-Platz 1, 40670 Meerbusch, Germany
5. St. Vincenz Hospital Paderborn, Department of Cardiology and Intensive Care Medicine, Am Busdorf 2, 33098 Paderborn, Germany