1. Department of Anatomical and Cellular Pathology, Prince of Wales Hospital The Chinese University of Hong Kong Hong Kong SAR People's Republic of China
2. Institute of Digestive Disease, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Science The Chinese University of Hong Kong Hong Kong SAR People's Republic of China
3. State Key Laboratory of Translational Oncology, Sir Y.K. Pao Cancer Center The Chinese University of Hong Kong Hong Kong SAR People's Republic of China
4. Department of Medicine and Therapeutics The Chinese University of Hong Kong Hong Kong SAR People's Republic of China
5. Department of Respiratory and Critical Care Medicine, Beijing Hospital, National Center of Gerontology Institute of Geriatric Medicine, Chinese Academy of Medical Sciences Beijing People's Republic of China