1. Ph.D. Student, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Room No. ZN1002, Hung Hom, Kowloon, Hong Kong SAR (corresponding author).
2. Chair Professor, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Room No. ZS734, Hung Hom, Kowloon, Hong Kong SAR.
3. Associate Professor, Dept. of Rehabilitation Sciences, Hong Kong Polytechnic Univ., Room No. ST505, Hung Hom, Kowloon, Hong Kong SAR.
4. Assistant Professor, Dept. of Rehabilitation Sciences, Hong Kong Polytechnic Univ., Room No. ST512, Hung Hom, Kowloon, Hong Kong SAR.