1. School of Marxism, Dalian University of Technology, Dalian, Liaoning Province, China
2. School of Marxism, Dalian Medical University, Dalian, Liaoning Province, China
3. Faculty of Humanities and Social Sciences, Dalian University of Technology, Dalian, Liaoning Province, China
4. College of Medical Laboratory, Dalian Medical University, Dalian, Liaoning Province, China