1. Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, No. 1677, Wutaishan Road, Qingdao, Shandong 266000, China
2. Clinical Laboratory, Qingdao Women and Children’s Hospital Affiliated, Qingdao University, Qingdao 266034, China
3. Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao 266000, China