1. Division of Pulmonary, Allergy, and Critical Care, Department of Medicine, UAB Lung Health Center, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States
2. Department of Clinical and Diagnostic Sciences, UAB School of Health Professions, University of Alabama at Birmingham, Birmingham, Alabama, United States
3. Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, United States
4. Program in Protease and Matrix Biology, University of Alabama at Birmingham, Birmingham, Alabama, United States
5. Gregory Fleming James Cystic Fibrosis Research Center, University of Alabama at Birmingham, Birmingham, Alabama, United States
6. Department of Cell, Developmental, and Integrative Biology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States
7. Pulmonary Section, Birmingham Veterans Affairs Medical Center, Birmingham, Alabama, United States