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Open-Access Journal
Editorial
Topic Highlight
Review
Original Article
Research Report
Evidence-Based Medicine
Jennifer Raisch, Emmanuel Buc, Mathilde Bonnet, Pierre Sauvanet, Emilie Vazeille, Amélie de Vallée, Pierre Déchelotte, Claude Darcha, Denis Pezet, Richard Bonnet, Marie-Agnès Bringer, Arlette Darfeuille-Michaud 
World J Gastroenterol 20(21):6560-6572. Published online Jun 7, 2014. doi: 10.3748/wjg.v20.i21.6560
Case Control Study
Retrospective Study
Toru Aoyama, Takaki Yoshikawa, Hirohito Fujikawa, Tsutomu Hayashi, Takashi Ogata, Haruhiko Cho, Takanobu Yamada, Shinichi Hasegawa, Kazuhito Tsuchida, Norio Yukawa, Takashi Oshima, Mari S Oba, Satoshi Morita, Yasushi Rino, Munetaka Masuda 
World J Gastroenterol 20(21):6580-6585. Published online Jun 7, 2014. doi: 10.3748/wjg.v20.i21.6580
Tae-Geun Gweon, Myung-Gyu Choi, Myong Ki Baeg, Chul-Hyun Lim, Jae Myung Park, In Seok Lee, Sang Woo Kim, Dong-Gun Lee, Yeon Joon Park, Jong Wook Lee 
World J Gastroenterol 20(21):6602-6607. Published online Jun 7, 2014. doi: 10.3748/wjg.v20.i21.6602
Clinical Trials Study
Observational Study
Miroslaw Snietura, Dariusz Waniczek, Wojciech Piglowski, Agnieszka Kopec, Ewa Nowakowska-Zajdel, Zbigniew Lorenc, Malgorzata Muc-Wierzgon 
World J Gastroenterol 20(21):6632-6637. Published online Jun 7, 2014. doi: 10.3748/wjg.v20.i21.6632
Prospective Study
Meta-Analysis
Case Report
Andrea Cacciato Insilla, Monnalisa Granai, Grazia Gallippi, Patrizia Giusti, Sabina Giusti, Simone Guadagni, Luca Morelli, Daniela Campani 
World J Gastroenterol 20(21):6675-6679. Published online Jun 7, 2014. doi: 10.3748/wjg.v20.i21.6675
Zong-Quan Wen, Guang-Yao Wu, Shao-Ping Yu, Xiao-Dong Lin, Song-Hu Li, Xian-Guang Huang, Fu Zhang, Xiao-Yu Zeng, Hai-Yan Huang, Ai-Mei Li 
World J Gastroenterol 20(21):6698-6700. Published online Jun 7, 2014. doi: 10.3748/wjg.v20.i21.6698