1. Department of Clinical and Diagnostic Science,
2. Department of Pathology,
3. Division of Pulmonary, Allergy & Critical Care Medicine, Department of Medicine,
4. Program in Protease and Matrix Biology, and
5. Lung Health Center and Gregory Fleming James CF Center, University of Alabama at Birmingham, Birmingham, Alabama;
6. Birmingham VA Medical Center, Birmingham, Alabama; and
7. National Heart and Lung Institute, Imperial College London, London, United Kingdom