1. Department of Clinical Laboratory, Yantaishan Hospital of Yantai, Yantai, Shandong 264000, P.R. China
2. Outpatient Department, Yantai Yeda Hospital, Yantai, Shandong 264000, P.R. China
3. Department of Internal Medicine, The People's Hospital of Zhangqiu Area, Zhangqiu, Shandong 250200, P.R. China
4. Department of Neurology, The People's Hospital of Zhangqiu Area, Zhangqiu, Shandong 250200, P.R. China
5. Department of Science and Education, Jinan Zhangqiu District Hospital of TCM, Zhangqiu, Shandong 250200, P.R. China
6. Department of Clinical Laboratory, The Fifth People's Hospital of Jinan, Jinan, Shandong 250022, P.R. China