1. Peking University Research Center on Aging; Department of Biochemistry and Molecular Biology; Peking University Health Science Center, Beijing, Key Laboratory of Protein Posttranslational Modifications and Cell Function; Beijing 100191 China
2. Department of Hepatobilliary Surgery; Beijing, Key Surgical Basic Research Laboratory of Liver Cirrhosis and Liver Cancer; Peking University People's Hospital; Beijing 100044 China