1. Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China
2. Bio-Bank of Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, P.R. China
3. School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, P.R. China