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Open-Access Journal
Editorial
Review
Basic Study
Naoki Sano, Takafumi Tamura, Naoyuki Toriyabe, Takeshi Nowatari, Ken Nakayama, Tomohito Tanoi, Soichiro Murata, Yu Sakurai, Mamoru Hyodo, Kiyoshi Fukunaga, Hideyoshi Harashima, Nobuhiro Ohkohchi 
World J Gastroenterol 21(45):12778-12786. Published online Dec 7, 2015. doi: 10.3748/wjg.v21.i45.12778
Hyun Jung Lee, Jong Eun Yeon, Eun Jung Ko, Eileen L Yoon, Sang Jun Suh, Keunhee Kang, Hae Rim Kim, Seoung Hee Kang, Yang Jae Yoo, Jihye Je, Beom Jae Lee, Ji Hoon Kim, Yeon Seok Seo, Hyung Joon Yim, Kwan Soo Byun 
World J Gastroenterol 21(45):12787-12799. Published online Dec 7, 2015. doi: 10.3748/wjg.v21.i45.12787
Yun Shi, Si-Ye Wang, Min Yao, Wen-Li Sai, Wei Wu, Jun-Ling Yang, Yin Cai, Wen-Jie Zheng, Deng-Fu Yao 
World J Gastroenterol 21(45):12814-12821. Published online Dec 7, 2015. doi: 10.3748/wjg.v21.i45.12814
Retrospective Cohort Study
Retrospective Study
Daisuke Ichikawa, Shuhei Komatsu, Toshiyuki Kosuga, Hirotaka Konishi, Kazuma Okamoto, Atsushi Shiozaki, Hitoshi Fujiwara, Eigo Otsuji 
World J Gastroenterol 21(45):12851-12856. Published online Dec 7, 2015. doi: 10.3748/wjg.v21.i45.12851
Yu-Gui Lian, Wei-Tao Zhang, Zhi Xu, Xiao-Feng Ling, Li-Xin Wang, Chun-Sheng Hou, Gang Wang, Long Cui, Xiao-Si Zhou 
World J Gastroenterol 21(45):12865-12872. Published online Dec 7, 2015. doi: 10.3748/wjg.v21.i45.12865
Prospective Study
Randomized Controlled Trial
Shu-Ming Yin, Fan Zhang, Dong-Mei Shi, Ping Xiang, Li Xiao, Yi-Qin Huang, Gan-Sheng Zhang, Zhi-Jun Bao 
World J Gastroenterol 21(45):12888-12895. Published online Dec 7, 2015. doi: 10.3748/wjg.v21.i45.12888
Systematic Reviews
Sirio Fiorino, Letizia Bacchi-Reggiani, Dario de Biase, Adele Fornelli, Michele Masetti, Andrea Tura, Fabio Grizzi, Matteo Zanello, Laura Mastrangelo, Raffaele Lombardi, Giorgia Acquaviva, Luca di Tommaso, Arrigo Bondi, Michela Visani, Sergio Sabbatani, Laura Pontoriero, Carlo Fabbri, Andrea Cuppini, Annalisa Pession, Elio Jovine 
World J Gastroenterol 21(45):12896-12953. Published online Dec 7, 2015. doi: 10.3748/wjg.v21.i45.12896
Meta-Analysis
Case Report
Raja Atreya, Ulrike Billmeier, Timo Rath, Jonas Mudter, Michael Vieth, Helmut Neumann, Markus F Neurath 
World J Gastroenterol 21(45):12963-12969. Published online Dec 7, 2015. doi: 10.3748/wjg.v21.i45.12963
Mu-Hsien Lee, Yu-Ching Lin, Hao-Tsai Cheng, Wen-Yu Chuang, Hsin-Chih Huang, Hsiao-Wen Kao 
World J Gastroenterol 21(45):12981-12986. Published online Dec 7, 2015. doi: 10.3748/wjg.v21.i45.12981
Letters To The Editor