1. Department of Anesthesiology, University of Alabama at Birmingham, Birmingham, Alabama.
2. Environmental Health Sciences, University of Alabama at Birmingham, Birmingham, Alabama.
3. Center for Pulmonary Injury and Repair, Schools of Medicine and Public Health, University of Alabama at Birmingham, Birmingham, Alabama.
4. Center for Free Radical Biology, Schools of Medicine and Public Health, University of Alabama at Birmingham, Birmingham, Alabama.
5. Department of Infectious Diseases, Drug Development Division, Southern Research Institute, Birmingham, Alabama.
6. Physiology and Biophysics, University of Alabama at Birmingham, Birmingham, Alabama.