1. National Jewish Health, Division of Environmental and Occupational Health Sciences
2. School of Medicine, University of Colorado
3. National Jewish Health, Center for Genes, Environment and Health
4. Department of Biostatistics and Informatics, University of Colorado
5. National Jewish Health, Department of Radiology
6. Radiology Imaging Associates
7. Veterans Administration Eastern Colorado Health Care System, Division of Pulmonary and Critical Care Medicine, Aurora, CO
8. National Jewish Health, Research Informatics Services, Denver