1. Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.
2. Pulmonary Section, Minneapolis Veterans Affairs Health Care System, Minneapolis, Minnesota, USA.
3. Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA.
4. Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
5. Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
6. Division of Respiratory and Critical Care Physiology and Medicine, Los Angeles Biomed Research Institute at Harbor-University of California Los Angeles Medical Center, Torrance, California, USA.
7. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA.
8. Division of Pulmonary, Critical Care and Sleep Medicine, Veterans Affairs Puget Sound Healthcare System, University of Washington, Seattle, Washington, USA.
9. Division of Endocrinology, Diabetes, and Metabolism, Johns Hopkins School of Medicine, Baltimore, Maryland, USA.
10. Division of Infectious Disease, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.
11. Department of Biostatistics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.