1 Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease, and.
2 Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania.
3 Department of Medicine, Clinician Investigator Program, and.
4 Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts.
5 Division of Respiratory Medicine, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada; and.
6 Air Pollution Exposure Laboratory, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada.