1. Department of Clinical Laboratory, Shandong Provincial Third Hospital, Jinan 250031, Shandong Province, China
2. Department of Clinical Laboratory, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
3. Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
4. Department of General Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China