Affiliation: | 1. Section of Pulmonary & Critical Care, Department of Medicine, University of Chicago, Chicago, IL;2. Division of Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of California at Davis, Davis, CA;3. Department of Radiology, University of Chicago, Chicago, IL;4. Department of Medicine, University of Chicago, Chicago, IL;5. Department of Pathology, University of Chicago, Chicago, IL |