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Review
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Original Article
Research Report
Jian-Jun Li, Hong-Bo Shan, Long-Jun He, Thomas D Wang, Huan Xiong, Li-Ming Chen, Xiao-Hai Li, Xin-Xin Huang, Guang-Yu Luo, Yin Li, Guo-Liang Xu 
World J Gastroenterol 20(35):12551-12558. Published online Sep 21, 2014. doi: 10.3748/wjg.v20.i35.12551
Evidence-Based Medicine
Case Control Study
Retrospective Study
Andreas Stallmach, Luisa Nickel, Thomas Lehmann, Bernd Bokemeyer, Martin Bürger, Dietrich Hüppe, Wolfgang Kruis, Susanna Nikolaus, Jan C Preiss, Andreas Sturm, Niels Teich, Carsten Schmidt 
World J Gastroenterol 20(35):12574-12580. Published online Sep 21, 2014. doi: 10.3748/wjg.v20.i35.12574
Observational Study
Prospective Study
Meta-Analysis
Case Report
Hyun Seon Kim, Jin Il Kim, Minyoung Jeong, Jae Hyun Seo, Il Kyu Kim, Dae Young Cheung, Tae-Jung Kim, Chang Suk Kang 
World J Gastroenterol 20(35):12682-12686. Published online Sep 21, 2014. doi: 10.3748/wjg.v20.i35.12682
Ji Eun Kim, Tae-Geun Gweon, Chang Dong Yeo, Young-Seok Cho, Gi Jun Kim, Jae Young Kim, Jong Wook Kim, Hyunho Kim, Hye Won Lee, Taeseok Lim, Hyoju Ham, Hyun Jin Oh, Yeongbok Lee, Jaeho Byeon, Sung Soo Park 
World J Gastroenterol 20(35):12687-12690. Published online Sep 21, 2014. doi: 10.3748/wjg.v20.i35.12687
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