1. Ph.D. Candidate, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong.
2. Chair Professor, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong (corresponding author).
3. Senior Lecturer, Dept. of Architecture and Built Environment, Northumbria Univ., Newcastle upon Tyne NE1 8ST, UK.
4. Lecturer of Project Management, School of Engineering and Construction Management, Western Sydney Univ., Penrith Campus, Kingswood, NSW 2747 Australia.