Zhao Yan-zhong, Huang Yan-yan, Zhu Jun, Zhu Shai-hong*, Li Zhi-you and Zhou Ke-chao*
* Corresponding authors: Zhu Shai-hong zhushaihong@medmail.com.cn - Zhou Ke-chao zhoukechao@csu.edu.cn
Nanoscale Research Letters 2011, 6:600 doi:10.1186/1556-276X-6-600
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