1. The Ottawa Hospital Research Institute, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada;
2. Universidad Central de Venezuela, Caracas, Venezuela;
3. Hospital Centro Médico de Caracas, Caracas, Venezuela;
4. Pulmonary and Critical Care Medicine and
5. Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, Alabama;
6. Department of Medicine, McGill University, Montreal, Quebec, Canada;
7. Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania;
8. Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts;
9. University of Exeter Medical School, University of Exeter, Exeter, United Kingdom;
10. Division of Pulmonary & Critical Care, University of Michigan, Ann Arbor, Michigan;
11. UCL Respiratory, University College London, London, United Kingdom;
12. Division of Pulmonary and Critical Care, Weill Cornell Medicine, New York, New York;
13. College of Medicine, University of Kentucky, Lexington, Kentucky;
14. Department of Clinical Pharmacy & Pharmacology, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, University of Groningen, Groningen, The Netherlands;
15. Philipps-Universität Marburg, German Center for Lung Research, Marburg, Germany;
16. National Heart and Lung Institute, Imperial College London, London, United Kingdom;
17. Department of Family Medicine and Community Health, University of Minnesota, Minneapolis, Minnesota; and
18. Cornell Medical College, New York, New York