1. UAB Lung Imaging Lab,
2. Division of Pulmonary, Allergy and Critical Care Medicine, and
3. Department of Electrical and Computer Engineering, University of Alabama at Birmingham, Birmingham, Alabama;
4. Division of Pulmonary, Critical Care and Occupational Medicine, University of Iowa Hospital, Iowa City, Iowa;
5. Division of Biostatistics and Bioinformatics, Office of Academic Affairs, National Jewish Health, Denver, Colorado;
6. Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts; and
7. Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania