L Li1, G G L Yue2, K P Fung2,3, J Yu4, C B S Lau2, P W Y Chiu1. 1. Department of Surgery, The Chinese University of Hong Kong. 2. Institute of Chinese Medicine and State Key Laboratory of Bioactivities and Clinical Applications of Medicinal Plants, The Chinese University of Hong Kong. 3. School of Biomedical Sciences, The Chinese University of Hong Kong. 4. Department of Medicine and Therapeutics, The Chinese University of Hong Kong.