Ning Tang1, Dengju Li2, Xiong Wang1, Jun Yang3. 1. Department of Clinical Laboratory, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China. 2. Department of Hematology, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China. 3. Department of Vascular Surgery, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China.