1. Pulmonary and Critical Care Division
2. Department of Respiratory Medicine and Sleep, Faculty of Medicine, Landspital University Hospital and
3. Faculty of Medicine, University of Iceland, Reykjavik, Iceland
4. Icelandic Heart Association, Kopavogur, Iceland
5. Department of Radiology
6. Center for Pulmonary Functional Imaging, and
7. Department of Radiology, Graduate School of Medicine, Osaka University, Osaka, Japan
8. Department of Clinical Radiology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan; and
9. Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
10. Department of Medicine, University of Colorado, Denver, Colorado