1. Department of Mechanical Engineering The University of Hong Kong Pokfulam Hong Kong
2. Advanced Biomedical Instrumentation Centre Hong Kong Science Park Shatin New Territories Hong Kong
3. Department of Biomedical Engineering City University of Hong Kong Kowloon Tong Hong Kong
4. Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
5. Department of Surgery The University of Hong Kong Pokfulam Hong Kong
6. Department of Electrical and Electronic Engineering The University of Hong Kong Pokfulam Hong Kong