1. Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, China
2. Department of Respiratory and Critical Care Medicine, the Second Xiangya Hospital, Hunan Centre for Evidence-based Medicine, Central South University, Changsha, China
3. Department of Obstetrics and Gynecology, the Second Xiangya Hospital, Central South University, Changsha, China
4. Institute of Molecular Hematology, Central South University, Changsha, China