1. Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology Cincinnati Children's Hospital and University of Cincinnati Cincinnati Ohio USA
2. Department of Radiology University of Sheffield Sheffield UK
3. Department of Diagnostic and Interventional Radiology University of Heidelberg Heidelberg Germany
4. Translational Lung Research Center (TLRC) Heidelberg German Center for lung Research (DZL) Heidelberg Germany
5. Center for Pulmonary Functional Imaging, Department of Radiology Brigham and Women's Hospital and Harvard Medical School Boston Massachusetts USA
6. Edinburgh Imaging, Queen's Medical Research Institute University of Edinburgh Edinburgh UK
7. Department of Radiology University of Missouri Columbia Missouri USA