1. Department of Anatomical and Cellular Pathology; State Key Laboratory in Oncology in South China; Prince of Wales Hospital; The Chinese University of Hong Kong; Hong Kong
2. Li Ka Shing Faculty of Medicine; The University of Hong Kong; Hong Kong
3. Department of Medicine and Therapeutics; The Chinese University of Hong Kong; Hong Kong
4. Institute of Digestive Disease; Partner State Key Laboratory of Digestive Disease; The Chinese University of Hong Kong; Hong Kong
5. Li Ka Shing Institute of Health Science; Sir Y K Pao Cancer Center; The Chinese University of Hong Kong; Hong Kong