1. University of Marburg; Member of the German Center for Lung Research (DZL); Marburg Germany
2. Lewis Katz School of Medicine at; Temple University; Philadelphia Pennsylvania
3. New York-Presbyterian Hospital; Weill Cornell Medical Center; New York, New York
4. University of Texas Health Science Center; San Antonio Texas
5. South Texas Veterans Health Care System; San Antonio Texas
6. National Heart and Lung Institute; Imperial College; London United Kingdom
7. McGill University Health Centre; McGill University; Montreal Quebec Canada
8. Brigham and Women's Hospital; Boston Massachusetts
9. State Key Lab for Respiratory Disease, Guangzhou Institute of Respiratory Disease; First Affiliated Hospital of Guangzhou Medical University; Guangzhou China
10. University of Leuven; Leuven Belgium
11. University of Modena and Reggio Emilia; Modena Italy
12. Faculty of Medicine; Flinders University; Bedford Park South Australia Australia
13. Royal Devon and Exeter Hospital; Exeter United Kingdom
14. Universidad de la República; Hospital Maciel; Montevideo Uruguay
15. Hokkaido University School of Medicine; Sapporo Japan
16. Hôpital Cochin (Assistance Publique-Hôpitaux de Paris); University Paris Descartes; Paris France
17. Thorax Institute; Hospital Clinic Universitat de Barcelona; Barcelona Spain
18. St. Paul's Hospital; University of British Columbia; Vancouver British Columbia Canada
19. University of Manchester; Manchester United Kingdom
20. University Hospital; Birmingham United Kingdom
21. Hospital Clínic; Universitat de Barcelona; Centro de Investigación Biomé dica en Red de Enfermedade Respiratorias Barcelona Spain