1 Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China.
2 Department of Immunology and Inflammation, Imperial College London, London, UK.
3 Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China. Electronic address: hematology_md@126.com.