1. Pulmonary Research Institute at Lung Clinic Grosshansdorf and Airway Research Center North; Member of the German Center for Lung Research; Grosshansdorf Germany
2. Department of Internal Medicine and Medical Specialties; University of Genoa, San Martino Hospital; Genoa Italy
3. New York-Presbyterian Hospital/Weill Cornell Medical Center; New York NY USA
4. German Heart Foundation; Frankfurt Germany
5. Klinik III für Innere Medizin, Herzzentrum der Universität zu Köln, Cologne, and Cologne Cardiovascular Research Center (CCRC); Heart Center at the University of Cologne; Cologne Germany