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Topic Highlight
Emilio González-Reimers, Geraldine Quintero-Platt, Candelaria Martín-González, Onán Pérez-Hernández, Lucía Romero-Acevedo, Francisco Santolaria-Fernández 
World J Gastroenterol 22(18):4427-4437. Published online May 14, 2016. doi: 10.3748/wjg.v22.i18.4427
Minireviews
An-Qiang Wang, Yong-Chang Zheng, Juan Du, Cheng-Pei Zhu, Han-Chun Huang, Shan-Shan Wang, Liang-Cai Wu, Xue-Shuai Wan, Hao-Hai Zhang, Ruo-Yu Miao, Xin-Ting Sang, Hai-Tao Zhao 
World J Gastroenterol 22(18):4459-4465. Published online May 14, 2016. doi: 10.3748/wjg.v22.i18.4459
Basic Study
Nicoletta Gagliano, Giuseppe Celesti, Lorenza Tacchini, Stefano Pluchino, Chiarella Sforza, Marco Rasile, Vincenza Valerio, Luigi Laghi, Vincenzo Conte, Patrizia Procacci 
World J Gastroenterol 22(18):4466-4483. Published online May 14, 2016. doi: 10.3748/wjg.v22.i18.4466
Retrospective Cohort Study
Alice Tung Wan Song, Rodolphe Sobesky, Carmen Vinaixa, Jérôme Dumortier, Sylvie Radenne, François Durand, Yvon Calmus, Géraldine Rousseau, Marianne Latournerie, Cyrille Feray, Valérie Delvart, Bruno Roche, Stéphanie Haim-Boukobza, Anne-Marie Roque-Afonso, Denis Castaing, Edson Abdala, Luiz Augusto Carneiro D’Albuquerque, Jean-Charles Duclos-Vallée, Marina Berenguer, Didier Samuel 
World J Gastroenterol 22(18):4547-4558. Published online May 14, 2016. doi: 10.3748/wjg.v22.i18.4547
Retrospective Study
Roberto Herrera-Goepfert, Luis F Oñate-Ocaña, José Luis Mosqueda-Vargas, Luis A Herrera, Clementina Castro, Julia Mendoza, Rodrigo González-Barrios 
World J Gastroenterol 22(18):4567-4575. Published online May 14, 2016. doi: 10.3748/wjg.v22.i18.4567
Observational Study
Systematic Reviews
Case Report