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Open-Access Journal
Editorial
Francesca Panzeri, Stefano Crippa, Paola Castelli, Francesca Aleotti, Alessandro Pucci, Stefano Partelli, Giuseppe Zamboni, Massimo Falconi 
World J Gastroenterol 21(26):7970-7987. Published online Jul 14, 2015. doi: 10.3748/wjg.v21.i26.7970
Minireviews
Basic Study
Eirini Pantazi, Mohamed Bejaoui, Mohamed Amine Zaouali, Emma Folch-Puy, Anabela Pinto Rolo, Arnau Panisello, Carlos Marques Palmeira, Joan Roselló-Catafau 
World J Gastroenterol 21(26):8021-8031. Published online Jul 14, 2015. doi: 10.3748/wjg.v21.i26.8021
Case Control Study
Retrospective Study
Mitsuru Sugimoto, Tadayuki Takagi, Takuto Hikichi, Rei Suzuki, Ko Watanabe, Jun Nakamura, Hitomi Kikuchi, Naoki Konno, Yuichi Waragai, Hiroyuki Asama, Mika Takasumi, Hiroshi Watanabe, Katsutoshi Obara, Hiromasa Ohira 
World J Gastroenterol 21(26):8118-8124. Published online Jul 14, 2015. doi: 10.3748/wjg.v21.i26.8118
Waleed Al-hamoudi, Hussien Elsiesy, Abdulrahman Bendahmash, Nasser Al-masri, Safiyya Ali, Naglaa Allam, Mohammed Al Sofayan, Hamad Al Bahili, Mohammed Al Sebayel, Dieter Broering, Sammy Saab, Faisal Abaalkhail 
World J Gastroenterol 21(26):8140-8147. Published online Jul 14, 2015. doi: 10.3748/wjg.v21.i26.8140
Observational Study
Takao Maekita, Jun Kato, Shotaro Enomoto, Takeichi Yoshida, Hirotoshi Utsunomiya, Hideyuki Hayashi, Toshiko Hanamitsu, Izumi Inoue, Yoshimasa Maeda, Kosaku Moribata, Yosuke Muraki, Naoki Shingaki, Hisanobu Deguchi, Kazuki Ueda, Mikitaka Iguchi, Hideyuki Tamai, Masao Ichinose 
World J Gastroenterol 21(26):8170-8177. Published online Jul 14, 2015. doi: 10.3748/wjg.v21.i26.8170
Prospective Study
Randomized Controlled Trial
Case Report