1. Division of Infectious Diseases, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.
2. Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.
3. Section of Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, New Haven, CT 06510, USA.
4. Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA.
5. Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.
6. Division of Pulmonary, Critical Care and Sleep Medicine, University of Cincinnati Medical Center, Cincinnati, OH 45219, USA.
7. Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.
8. Respiratory Institute, Cleveland Clinic, Cleveland, OH 44195, USA.
9. Department of Biostatistics and Epidemiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73126, USA.
10. National Institute for Health Research Respiratory Biomedical Research Unit, Royal Brompton Hospital, London SW7 2AZ, UK.
11. Fibrosis Research Group, National Heart and Lung Institute, Imperial College, London SW7 2AZ, UK.
12. Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, IL 60637, USA.
13. Centre for Cell Therapy and Regenerative Medicine, School of Biomedical Sciences, University of Western Australia, Nedlands, Western Australia 6009, Australia.
14. Institute for Respiratory Health, Centre for Respiratory Health, School of Biomedical Sciences, University of Western Australia, Nedlands, Western Australia 6009, Australia.