1. Assistant Professor, Dept. of Building and Real Estate, The Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong; formerly, Research Fellow, School of Construction Management and Engineering, Univ. of Reading, Whiteknights, P.O. Box 219, Reading RG6 6AW, U.K. (corresponding author).
2. Professor, Dept. of Building and Real Estate, The Hong Kong Polytechnic Univ., Hong Kong.
3. Ph.D. Candidate, Dept. of Building and Real Estate, The Hong Kong Polytechnic Univ., Hong Kong.