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Open-Access Journal
Editorial
Marco Biolato, Giuseppe Marrone, Luca Miele, Antonio Gasbarrini, Antonio Grieco 
World J Gastroenterol 23(18):3195-3204. Published online May 14, 2017. doi: 10.3748/wjg.v23.i18.3195
Caterina Anania, Francesca Olivero, Alessandra Spagnolo, Claudio Chiesa, Lucia Pacifico 
World J Gastroenterol 23(18):3205-3213. Published online May 14, 2017. doi: 10.3748/wjg.v23.i18.3205
Review
Basic Study
Guo-Lin He, Lei Feng, Lei Cai, Chen-Jie Zhou, Yuan Cheng, Ze-Sheng Jiang, Ming-Xin Pan, Yi Gao 
World J Gastroenterol 23(18):3262-3268. Published online May 14, 2017. doi: 10.3748/wjg.v23.i18.3262
Wei Wei, Yan-Song Pu, Xin-Kai Wang, An Jiang, Rui Zhou, Yu Li, Qiu-Juan Zhang, Ya-Juan Wei, Bin Chen, Zong-Fang Li 
World J Gastroenterol 23(18):3279-3286. Published online May 14, 2017. doi: 10.3748/wjg.v23.i18.3279
Case Control Study
Retrospective Study
Shinichi Takano, Mitsuharu Fukasawa, Makoto Kadokura, Hiroko Shindo, Ei Takahashi, Sumio Hirose, Yoshimitsu Fukasawa, Satoshi Kawakami, Tadashi Sato, Nobuyuki Enomoto 
World J Gastroenterol 23(18):3295-3300. Published online May 14, 2017. doi: 10.3748/wjg.v23.i18.3295
Jang Han Jung, Hyun Jik Lee, Hee Seung Lee, Jung Hyun Jo, In Rae Cho, Moon Jae Chung, Jeong Youp Park, Seung Woo Park, Si Young Song, Seungmin Bang 
World J Gastroenterol 23(18):3301-3308. Published online May 14, 2017. doi: 10.3748/wjg.v23.i18.3301
Observational Study
Nalinee Srisarajivakul, Catherine Lucero, Xiao-Jing Wang, Michael Poles, Colleen Gillespie, Sondra Zabar, Elizabeth Weinshel, Lisa Malter 
World J Gastroenterol 23(18):3315-3321. Published online May 14, 2017. doi: 10.3748/wjg.v23.i18.3315
Soo-Kyung Lim, Seung Jin Yoo, Dae Lim Koo, Chae A Park, Han Jun Ryu, Yong Jin Jung, Ji Bong Jeong, Byeong Gwan Kim, Kook Lae Lee, Seong-Joon Koh 
World J Gastroenterol 23(18):3330-3337. Published online May 14, 2017. doi: 10.3748/wjg.v23.i18.3330
Prospective Study
Somashekar G Krishna, Rohan M Modi, Amrit K Kamboj, Benjamin J Swanson, Phil A Hart, Mary E Dillhoff, Andrei Manilchuk, Carl R Schmidt, Darwin L Conwell 
World J Gastroenterol 23(18):3338-3348. Published online May 14, 2017. doi: 10.3748/wjg.v23.i18.3338
Natalie Stollon, Yi Zhong, Maria Ferris, Suneet Bhansali, Brian Pitts, Eniko Rak, Maureen Kelly, Sandra Kim, Miranda A L van Tilburg 
World J Gastroenterol 23(18):3349-3355. Published online May 14, 2017. doi: 10.3748/wjg.v23.i18.3349
Randomized Controlled Trial
Natalia Pedersen, Dorit Vedel Ankersen, Maria Felding, Henrik Wachmann, Zsuzsanna Végh, Line Molzen, Johan Burisch, Jens Rikardt Andersen, Pia Munkholm 
World J Gastroenterol 23(18):3356-3366. Published online May 14, 2017. doi: 10.3748/wjg.v23.i18.3356
Evidence-Based Medicine
Angel Cosme, Milagrosa Montes, Begoña Ibarra, Esther Tamayo, Horacio Alonso, Usua Mendarte, Jacobo Lizasoan, Marta Herreros-Villanueva, Luis Bujanda 
World J Gastroenterol 23(18):3367-3373. Published online May 14, 2017. doi: 10.3748/wjg.v23.i18.3367
Case Report