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Akiharu Kimura, Norihiro Masuda, Norihiro Haga, Tomokazu Ito, Kichirou Otsuka, Jyunko Takita, Hitoshi Satomura, Yuji Kumakura, Hiroyuki Kato, Hiroyuki Kuwano 
World J Gastroenterol 21(5):1670-1674. Published online Feb 7, 2015. doi: 10.3748/wjg.v21.i5.1670
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