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Case Control Study
Mazen Naga, Mona Amin, Dina Algendy, Ahmed Elbadry, May Fawzi, Ayman Foda, Serag Esmat, Dina Sabry, Laila Rashed, Samia Gabal, Manal Kamal 
World J Gastroenterol 21(39):11141-11151. Published online Oct 21, 2015. doi: 10.3748/wjg.v21.i39.11141
Yan Ren, Mei Liu, Jing Zhao, Feng Ren, Yu Chen, Jun-Feng Li, Jing-Yun Zhang, Feng Qu, Jin-Lan Zhang, Zhong-Ping Duan, Su-Jun Zheng 
World J Gastroenterol 21(39):11152-11159. Published online Oct 21, 2015. doi: 10.3748/wjg.v21.i39.11152
Retrospective Study
Clinical Trials Study
Shintaro Tsukinaga, Mikio Kajihara, Kazuki Takakura, Zensho Ito, Tomoya Kanai, Keisuke Saito, Shinichiro Takami, Hiroko Kobayashi, Yoshihiro Matsumoto, Shunichi Odahara, Kan Uchiyama, Hiroshi Arakawa, Masato Okamoto, Haruo Sugiyama, Kazuki Sumiyama, Toshifumi Ohkusa, Shigeo Koido 
World J Gastroenterol 21(39):11168-11178. Published online Oct 21, 2015. doi: 10.3748/wjg.v21.i39.11168
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