1. National Heart and Lung InstituteImperial College London UK
2. Research Unit of Internal MedicineUniversity of Oulu and University Hospital Oulu Finland
3. CardiologiaIRCCS PoliclinicoUniversity of Milan Milan Italy
4. Klinik für Innere Medizin ITechnische Universität München Munich Germany
5. Department of Cardiology and Pneumology Heart Center – University of Göttingen Medical Center Göttingen Germany