1. Channing Division of Network Medicine
2. Pulmonary and Critical Care Division, Department of Medicine, and
3. Department of Biostatistics, Colorado School of Public Health, University of Colorado, Aurora, Colorado
4. Division of Pulmonary Medicine, Department of Medicine, National Jewish Health, Denver, Colorado
5. Department of Clinical Science, University of Bergen, Bergen, Norway
6. Harvard School of Public Health, Boston, Massachusetts
7. Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland; and
8. Department of Radiology, University of British Columbia, Vancouver, British Columbia, Canada
9. Division of General Medicine and Primary Care, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts