1. Division of Pulmonary and Critical Care Medicine, Department of Medicine
2. Division of Thoracic Surgery, Department of Surgery
3. Division of Rheumatology, Department of Medicine
4. Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois; and
5. Department of Pathology, and
6. Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
7. Department of Chemical and Biological Engineering, Weinberg College of Arts and Sciences, Northwestern University, Evanston, Illinois