1. Department of Chemistry The Chinese University of Hong Kong Shatin, N. T. Hong Kong
2. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Periodontics West China Hospital of Stomatology Sichuan University Chengdu 610041 China
3. Musculoskeletal Research Laboratory Department of Orthopaedics and Traumatology and Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory of Li Ka Shing Institute of Health Faculty of Medicine The Chinese University of Hong Kong Shatin, N. T. Hong Kong
4. Department of Physics The Chinese University of Hong Kong Shatin, N. T. Hong Kong