1. State Key Laboratory of Proteomics, Beijing Proteome Research Center, Beijing Institute of Radiation Medicine, Beijing 102206, P. R. China
2. Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, P. R. China
3. Digestive Department, the First Affiliated Hospital, College of medicine, Zhejiang University, Hangzhou 310003, P. R. China
4. National Center of Biomedical Analysis, Beijing 100850, P. R. China
5. National Laboratory for Parallel & Distributed Processing, National University of Deference and Technology, Changsha 410073, P. R. China
6. Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, P. R. China