1. Division of Pulmonary, Critical Care, Allergy, and Sleep Medicine, Department of Medicine,
2. Department of Radiology and Biomedical Imaging, and
3. Duke Radiology, Department of Radiology, Duke University, Durham, North Carolina;
4. Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri;
5. Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin;
6. Division of Pulmonary, Critical Care, and Sleep Medicine, University of Kansas School of Medicine, Kansas City, Kansas;
7. Department of Radiology, University of Iowa, Iowa City, Iowa;
8. Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts;
9. Center for Biostatistics and Epidemiology, Pennsylvania State University School of Medicine, Harrisburg, Pennsylvania;
10. Division of Biostatistics and Bioinformatics, Penn State College of Medicine, The Pennsylvania State University, Hershey, Pennsylvania;
11. Division of Allergy, Pulmonary, and Critical Care Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin;
12. Asthma, Allergy, Dermatology, Rheumatology, and Immunology, Boston Children’s Hospital, Boston, Massachusetts;
13. Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania;
14. Department of Medicine, University of Arizona College of Medicine, Tucson, Arizona;
15. Cardiovascular Research Institute, University of California San Francisco, San Francisco, California;
16. Education and Research Centre, St. Vincent’s University Hospital, Dublin, Ireland; and
17. UCD School of Medicine, University College Dublin, Dublin, Ireland