1. Department of Hematology, Handan Central Hospital, Handan, Hebei 056001, P.R. China
2. Department of Vascular Surgery, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences, Beijing 100037, P.R. China
3. Department of Hematology, Handan Central Hospital, Handan, Hebei 056001, P.R. China
4. Good Clinic Practice, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences, Tianjin 300020, P.R. China