1. Nicholas School of the Environment, Duke University, Durham, North Carolina 27708, United States
2. Duke Global Health Institute, Duke University, Durham, North Carolina 27708, United States
3. Department of Civil and Environmental Engineering, Duke University, Durham, North Carolina 27708, United States
4. Department of Pediatrics, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
5. Department of Civil and Environmental Engineering, College of Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706,United States
6. Duke Kunshan University, Kunshan, Jiangsu Province 215316, People’s Republic of China
7. Department of Building Science, Tsinghua University, Beijing, People’s Republic of China
8. Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing, People’s Republic of China
9. Department of Pulmonary Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200240, China
10. Underwriters Laboratories, Inc, Marietta, Georgia 30067, United States