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Open-Access Journal
Editorial
Federica Cavalcoli, Alessandra Zilli, Dario Conte, Sara Massironi 
World J Gastroenterol 23(4):563-572. Published online Jan 28, 2017. doi: 10.3748/wjg.v23.i4.563
Review
Basic Study
You Lv, Tao Ye, Hui-Peng Wang, Jia-Ying Zhao, Wen-Jie Chen, Xin Wang, Chen-Xia Shen, Yi-Bin Wu, Yuan-Kun Cai 
World J Gastroenterol 23(4):603-613. Published online Jan 28, 2017. doi: 10.3748/wjg.v23.i4.603
Retrospective Cohort Study
Ryan Law, Jithinraj E Varayil, Louis M WongKeeSong, Jeff Fidler, Joel G Fletcher, John Barlow, Jeffrey Alexander, Elizabeth Rajan, Stephanie Hansel, Brenda Becker, Joseph J Larson, Felicity T Enders, David H Bruining, Nayantara Coelho-Prabhu 
World J Gastroenterol 23(4):614-621. Published online Jan 28, 2017. doi: 10.3748/wjg.v23.i4.614
Mohammad Sakr, Sara M Abdelhakam, Soheir A Elsayed, Enas H Allam, Amir M Farid, Waleed Abdelmoaty, Azza M Hassan, Mohamed Shaker, Mohamed El-Gharib, Ahmed Eldorry 
World J Gastroenterol 23(4):629-637. Published online Jan 28, 2017. doi: 10.3748/wjg.v23.i4.629
Retrospective Study
Ken Kamata, Mamoru Takenaka, Masayuki Kitano, Shunsuke Omoto, Takeshi Miyata, Kosuke Minaga, Kentaro Yamao, Hajime Imai, Toshiharu Sakurai, Tomohiro Watanabe, Naoshi Nishida, Masatoshi Kudo 
World J Gastroenterol 23(4):661-667. Published online Jan 28, 2017. doi: 10.3748/wjg.v23.i4.661
Kouichi Sakurai, Hiroko Suda, Yumi Ido, Takayuki Takeichi, Ayako Okuda, Kiwamu Hasuda, Masahiro Hattori 
World J Gastroenterol 23(4):668-675. Published online Jan 28, 2017. doi: 10.3748/wjg.v23.i4.668
Eun-Ki Min, Jae Uk Chong, Ho Kyoung Hwang, Sang Joon Pae, Chang Moo Kang, Woo Jung Lee 
World J Gastroenterol 23(4):676-686. Published online Jan 28, 2017. doi: 10.3748/wjg.v23.i4.676
Observational Study
Marisol Luján-Sanchis, Enrique Pérez-Cuadrado-Robles, Javier García-Lledó, José-Francisco Juanmartiñena Fernández, Luca Elli, Victoria-Alejandra Jiménez-García, Juan Egea-Valenzuela, Julio Valle-Muñoz, Cristina Carretero-Ribón, Ignacio Fernández-Urién-Sainz, Antonio López-Higueras, Noelia Alonso-Lázaro, Mileidis Sanjuan-Acosta, Francisco Sánchez-Ceballos, Bruno Rosa, Santiago González-Vázquez, Federica Branchi, Lucía Ruano-Díaz, César Prieto-de-Frías, Vicente Pons-Beltrán, Pilar Borque-Barrera, Begoña González-Suárez, Sofía Xavier, Federico Argüelles-Arias, Juan-Manuel Herrerías-Gutiérrez, Enrique Pérez-Cuadrado-Martínez, Javier Sempere-García-Argüelles 
World J Gastroenterol 23(4):703-711. Published online Jan 28, 2017. doi: 10.3748/wjg.v23.i4.703
Hiroyuki Kitabatake, Naoki Tanaka, Naoyuki Fujimori, Michiharu Komatsu, Ayaka Okubo, Kyogo Kakegawa, Takefumi Kimura, Ayumi Sugiura, Tomoo Yamazaki, Soichiro Shibata, Yuki Ichikawa, Satoru Joshita, Takeji Umemura, Akihiro Matsumoto, Masayoshi Koinuma, Kenji Sano, Toshifumi Aoyama, Eiji Tanaka 
World J Gastroenterol 23(4):712-722. Published online Jan 28, 2017. doi: 10.3748/wjg.v23.i4.712
Xi-Xu Wang, Bo Dong, Biao Hong, Yi-Qun Gong, Wei Wang, Jue Wang, Zhen-Yu Zhou, Wei-Jun Jiang 
World J Gastroenterol 23(4):723-729. Published online Jan 28, 2017. doi: 10.3748/wjg.v23.i4.723
Case Report
Julien Barbieux, Riccardo Memeo, Vito De Blasi, Sebastian Suciu, Vanina Faucher, Gerlinde Averous, Catherine Roy, Jacques Marescaux, Didier Mutter, Patrick Pessaux 
World J Gastroenterol 23(4):730-734. Published online Jan 28, 2017. doi: 10.3748/wjg.v23.i4.730
Muneji Yasuda, Hideki Sato, Yuki Koyama, Tomoki Sakakida, Takumi Kawakami, Takeshi Nishimura, Hideki Fujii, Yoshikazu Nakatsugawa, Shinya Yamada, Naoya Tomatsuri, Yusuke Okuyama, Hiroyuki Kimura, Takaaki Ito, Hiroyuki Morishita, Norimasa Yoshida 
World J Gastroenterol 23(4):735-739. Published online Jan 28, 2017. doi: 10.3748/wjg.v23.i4.735
Letters To The Editor
Alvin Ibarra, Kaisa Olli, Arthur C Ouwehand 
World J Gastroenterol 23(4):740-742. Published online Jan 28, 2017. doi: 10.3748/wjg.v23.i4.740