1. Department of Biomedical Engineering University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
2. Division of Pulmonary and Critical Care Medicine University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
3. Marsico Lung Institute/UNC Cystic Fibrosis Center University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
4. Division of Pediatric Pulmonology University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
5. Department of Radiology Case Western Reserve University Cleveland Ohio USA
6. Department of Radiology and Biomedical Research Imaging Center University of North Carolina at Chapel Hill Chapel Hill North Carolina USA