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Does the variable-stiffness colonoscope makes colonoscopy easier? A meta-analysis of the efficacy of the variable stiffness colonoscope compared with the standard adult colonoscope

Qin Xie, Bin Chen, Liu Liu and Huatian Gan*

BMC Gastroenterology 2012, 12:151  doi:10.1186/1471-230X-12-151

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