1. Department of Medicine, University of Colorado School of Medicine, Aurora, CO, USA
2. Office of Professional Education, National Jewish Health, Denver, CO, USA
3. Interstitial Lung Disease Program, National Jewish Health, Denver, CO, USA
4. Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
5. Denver Health, Denver, CO, USA