1. Klinik für Innere Medizin III; der Universität des Saarlandes; Homburg/Saar Germany
2. Division of Cardiovascular Medicine and the Howard Gilman Institute for Heart Valve Disease and the Schiavone Institute for Cardiovascular Translational Research; State University of New York Downstate Medical Center; New York NY USA
3. Imperial College London; London UK
4. University, La Pitié-Salpétrière Hospital; Paris France
5. Department of Cardiology, Department of Research and Education; Celje Slovenia
6. Department of Molecular and Clinical Medicine, Sahlgrenska Academy; University of Gothenburg; Göteborg Sweden