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In vitro and in vivo anti-tumor effect of metformin as a novel therapeutic agent in human oral squamous cell carcinoma

Qingqiong Luo, Dan Hu, Shuiqing Hu, Ming Yan, Zujun Sun and Fuxiang Chen*

BMC Cancer 2012, 12:517  doi:10.1186/1471-2407-12-517

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