| Affiliation: | 1. Vascular Medicine Institute, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA;2. Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA;3. Center for Biologic Imaging, University of Pittsburgh, Pittsburgh, PA, USA;4. The Dorothy P. and Richard P. Simmons Center for Interstitial Lung Diseases, University of Pittsburgh, Pittsburgh, PA, USA;5. Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA, USA |
