Affiliation: | 1. Department of Radiology, Virginia Mason Medical Center, Seattle, WA;2. University of Missouri-Kansas City, Kansas City, MO;3. Department of Radiology, Saint Luke?s Hospital, Kansas City, MO;4. Department of Pulmonary Medicine, University of Texas - MD Anderson Cancer Center, Houston, TX;5. Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI |