Peking University People's Hospital, Beijing, China. First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China. First Affiliated Hospital of Zhejiang University, Hangzhou, Zhejiang, China. First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China. Harbin Institute of Haematology and Oncology, Harbin, China. Institute of Haematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China. Rui Jin Hospital affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China. Peking University People's Hospital, Beijing, China. xjhrm@medmail.com.cn.