1. Department
of Building Science, Tsinghua University, Beijing 100084, China
2. Beijing Key Laboratory
of Indoor Air Quality Evaluation and Control, Beijing 100084, China
3. Environmental
and Occupational Health Sciences Institute, Rutgers University, Piscataway, New Jersey 08854, United States
4. Global
Health Institute and the Nicholas School of Environment, Duke University, Durham, North Carolina 27708, United States
5. Duke Kunshan University, Kunshan, Jiangsu 215316, China