1. Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
2. VA Pittsburgh Healthcare System, Pittsburgh, PA, USA
3. Department of Immunology, Herbert Wertheim College of Medicine, Florida International University Miami, Miami, FL, USA
4. Regeneron Genetics Center, Tarrytown, NY, USA
5. COPD Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
6. Biomedical Research Institute of New Mexico
7. Department of Microbiology, University of Iowa, Roy J. and Lucille A. Carver College of Medicine, Iowa City, IA, USA