1. Aulin College, Northeast Forestry University 150040 , 26 Hexing Road, Xiangfang District, Harbin , China
2. Key Laboratory of Hepatosplenic Surgery , Ministry of Education, Department of General Surgery, , Harbin , China
3. the First Affiliated Hospital of Harbin Medical University 150001, 23 Postal Street, Nangang District , Ministry of Education, Department of General Surgery, , Harbin , China
4. College of Computer and Control Engineering, Northeast Forestry University 150040, 26 Hexing Road, Xiangfang District , Harbin , China
5. Faculty of Computing, Harbin Institute of Technology 150006, 92 West Dazhi Street, Nangang District , Harbin , China