Department of Gastroenterology, Zhongshan Hospital of Fudan University, Shanghai, China.|College of Life Science, Northeast Forestry University, Harbin, China.|Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing, China.|School of Life Science and Technology, ShanghaiTech University, Shanghai, China.|Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China.|Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.|Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China.|College of Animal Sciences, Jilin University, Changchun, China.|Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.|Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China.|Department of Life Sciences, Southeast University, Nanjing, China.|Cluster of Excellence Rebirth, Hannover Medical School, Hannover, Germany.|Cluster of Excellence Rebirth, Hannover Medical School, Hannover, Germany.|Cluster of Excellence Rebirth, Hannover Medical School, Hannover, Germany.|Changchun Sub-branch, the Peoples Bank of China, Changchun, China.