1. School of Architecture and Urban Planning, Nanjing University, 210093 Nanjing, China
2. Nicholas School of the Environment, Duke University, 27708 Durham, North Carolina, United States
3. School of Environmental Science and Engineering, Sun Yat-sen University, 510006 Guangzhou, China
4. Department of Civil and Environmental Engineering, Virginia Tech, 24061 Blacksburg, Virginia, United States
5. Department of Building Science, School of Architecture, Tsinghua University, 100084 Beijing, China
6. Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Tsinghua University, 100084 Beijing, China