1. Department of Biostatistics, Center for Global Health, School of Public Health, and
2. Department of Biostatistics, University of Michigan, Ann Arbor, Michigan;
3. Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, Washington;
4. Division of Pulmonary, Allergy, and Critical Care Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania;
5. China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China;
6. Division of Pulmonary and Critical Care, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts;
7. Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts; and
8. Changzhou Medical Center, Nanjing Medical University, Changzhou, China