1. Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania
2. Unit of Integrated Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
3. Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
4. Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Yale School of Medicine, New Haven, Connecticut
5. Department of Medicine, Simmons Center for Interstitial Lung Disease, University of Pittsburgh, Pittsburgh, Pennsylvania
6. Departments of Computer Science and Human Genetics, University of California, Los Angeles, California
7. Division of Human Genetics, Cincinnati Children’s Hospital and Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio
8. Division of Allergy and Respiratory Medicine, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, South Korea