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Ying Li, Hui Zheng, Qianhua Zheng, Ling Zhao, Erqi Qin, Yu Wang, Qian Zeng, Huabin Zheng, Yu Zhao, Wei Sun, Xiaoxia Zhang, Zhishun Liu and Baoyan Liu*
Corresponding author: Baoyan Liu email@example.com
Trials 2014, 15:198
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