1. Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510500, P.R. China
2. Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
3. Department of Hematology, Kang Hua Hospital, Dongguan, Guangdong 523080, P.R. China