1. Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, University of Pittsburgh-UPMC,
2. Division of Pulmonary, Critical Care, and Sleep Medicine, State University of New York at Buffalo, Jacobs School of Medicine and Biomedical Sciences, Buffalo, New York
3. Department of Health Policy and Management, School of Public Health, and
4. College of Nursing and
5. Division of Pulmonary and Critical Care, Medical University of South Carolina, Charleston, South Carolina; and
6. Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease, University of Pittsburgh, Pittsburgh, Pennsylvania;