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Ling Zhang, Hui Li, Qing-hai Ji*, Yong-xue Zhu, Zhuo-ying Wang, Yu Wang, Cai-ping Huang, Qiang Shen, Duan-shu Li and Yi Wu
* Corresponding author: Qing-hai Ji jiqinghai@shca.org.cn
BMC Cancer 2012, 12:610 doi:10.1186/1471-2407-12-610