1. AIDS Institute, Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong, PR China
2. Department of Medicine, National Jewish Health, Denver, CO 80206, USA
3. Department of Anatomy, The University of Hong Kong, Hong Kong, PR China
4. Department of Biochemistry, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong, PR China
5. Liver Disease Institute, Shenzhen Third People’s Hospital, Shenzhen 518112, PR China