1. School
of Energy Science and Engineering, Central South University, Changsha, China, 410083
2. Department
of Civil Engineering, The University of Hong Kong, Hong Kong SAR, China
3. Department
of Occupational and Environmental Health, College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73126, United States
4. Department of Civil & Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China