1. Professor and Acting Dean, Faculty of Construction and Environment, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong, China.
2. Ph.D. Candidate, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong, China (corresponding author).
3. Associate Professor, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong, China.
4. Associate Professor, Technological and Higher Education Institute of Hong Kong, Hong Kong, China.