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Open-Access Journal
Editorial
Topic Highlight
Review
Basic Study
Yukihito Ishii, Yu Motohashi, Makoto Muramatsu, Yoshiaki Katsuda, Katsuhiro Miyajima, Tomohiko Sasase, Takahisa Yamada, Tohru Matsui, Shinichi Kume, Takeshi Ohta 
World J Gastroenterol 21(30):9067-9078. Published online Aug 14, 2015. doi: 10.3748/wjg.v21.i30.9067
Case Control Study
Giulia Malaguarnera, Marco Vacante, Filippo Drago, Gaetano Bertino, Massimo Motta, Maria Giordano, Michele Malaguarnera 
World J Gastroenterol 21(30):9103-9110. Published online Aug 14, 2015. doi: 10.3748/wjg.v21.i30.9103
Retrospective Cohort Study
Gijs HK Berkelmans, Ewout A Kouwenhoven, Boudewijn JJ Smeets, Teus J Weijs, Luis C Silva Corten, Marc J van Det, Grard AP Nieuwenhuijzen, Misha DP Luyer 
World J Gastroenterol 21(30):9118-9125. Published online Aug 14, 2015. doi: 10.3748/wjg.v21.i30.9118
Retrospective Study
Ahrong Kim, Won-Young Park, Nari Shin, Hyun Jung Lee, Young Keum Kim, So Jeong Lee, Cheong-Soo Hwang, Do Youn Park, Gwang Ha Kim, Bong Eun Lee, Hong-Jae Jo 
World J Gastroenterol 21(30):9126-9133. Published online Aug 14, 2015. doi: 10.3748/wjg.v21.i30.9126
Seung Han Kim, Hoon Jai Chun, In Kyung Yoo, Jae Min Lee, Seung Joo Nam, Hyuk Soon Choi, Eun Sun Kim, Bora Keum, Yeon Seok Seo, Yoon Tae Jeen, Hong Sik Lee, Soon Ho Um, Chang Duck Kim 
World J Gastroenterol 21(30):9134-9141. Published online Aug 14, 2015. doi: 10.3748/wjg.v21.i30.9134
Observational Study
Prospective Study
Javier Salmerón, Carmen Vinaixa, Rubén Berenguer, Juan Manuel Pascasio, Juan José Sánchez Ruano, Miguel Ángel Serra, Ana Gila, Moisés Diago, Manuel Romero-Gómez, José María Navarro, Milagros Testillano, Conrado Fernández, Dolores Espinosa, Isabel Carmona, José Antonio Pons, Francisco Jorquera, Francisco Javier Rodriguez, Ramón Pérez, José Luis Montero, Rafael Granados, Miguel Fernández, Ana Belén Martín, Paloma Muñoz de Rueda, Rosa Quiles, Alhambra Spanish Study Group 
World J Gastroenterol 21(30):9163-9174. Published online Aug 14, 2015. doi: 10.3748/wjg.v21.i30.9163
Randomized Controlled Trial
Meta-Analysis
Case Report
Nobuyoshi Takeshita, Naoki Kanda, Toru Fukunaga, Masayuki Kimura, Yuji Sugamoto, Kentaro Tasaki, Masaya Uesato, Tetsutaro Sazuka, Tetsuro Maruyama, Naohiro Aida, Tomohide Tamachi, Takashi Hosokawa, Yo Asai, Hisahiro Matsubara 
World J Gastroenterol 21(30):9223-9227. Published online Aug 14, 2015. doi: 10.3748/wjg.v21.i30.9223