1. School of Physical Science and Technology
2. Lingnan Normal University
3. Zhanjiang 524048
4. P. R. China
5. Department of Materials Science and Engineering (MSE)
6. City University of Hong Kong
7. China
8. The State Key Laboratory of Experimental Hematology
9. Institute of Hematology
10. Chinese Academy of Medical Sciences
11. Tianjin 300020