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Open-Access Journal
Editorial
Abhilasha Patel, Gyanendra Tripathi, Kishore Gopalakrishnan, Nigel Williams, Ramesh P Arasaradnam 
World J Gastroenterol 21(13):3763-3772. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3763
Topic Highlight
Review
Adriana M Salazar-Montes, Luis D Hernández-Ortega, Martha S Lucano-Landeros, Juan Armendariz-Borunda 
World J Gastroenterol 21(13):3813-3825. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3813
Minireviews
Basic Study
Aldona Kasprzak, Agnieszka Adamek, Wiesława Przybyszewska, Przemysław Pyda, Jacek Szmeja, Agnieszka Seraszek-Jaros, Agata Lanzafame, Anna Surdacka, Iwona Mozer-Lisewska, Maria Koczorowska 
World J Gastroenterol 21(13):3867-3875. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3867
Naoko Terao, Shinji Takamatsu, Tomomi Minehira, Tomoaki Sobajima, Kotarosumitomo Nakayama, Yoshihiro Kamada, Eiji Miyoshi 
World J Gastroenterol 21(13):3876-3887. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3876
Mei Li, Xiu-Fang Wang, Juan-Juan Shi, Ya-Ping Li, Ning Yang, Song Zhai, Shuang-Suo Dang 
World J Gastroenterol 21(13):3893-3903. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3893
Case Control Study
Haruya Ishiguro, Hiroshi Abe, Nobuyoshi Seki, Tomonori Sugita, Yuta Aida, Munenori Itagaki, Satoshi Sutoh, Noritomo Shimada, Tomomi Furihata, Akihito Tsubota, Yoshio Aizawa 
World J Gastroenterol 21(13):3904-3911. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3904
Retrospective Cohort Study
Stefano Gitto, Luca Saverio Belli, Ranka Vukotic, Stefania Lorenzini, Aldo Airoldi, Arrigo Francesco Giuseppe Cicero, Marcello Vangeli, Lucia Brodosi, Arianna Martello Panno, Roberto Di Donato, Matteo Cescon, Gian Luca Grazi, Luciano De Carlis, Antonio Daniele Pinna, Mauro Bernardi, Pietro Andreone 
World J Gastroenterol 21(13):3912-3920. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3912
Daisuke Ito, Kenji Miki, Shimizu Seiichiro, Shojiro Hata, Kaoru Kobayashi, Masanori Teruya, Michio Kaminishi 
World J Gastroenterol 21(13):3921-3927. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3921
Retrospective Study
Seung In Seo, Hyoung Su Kim, Won Jin Kim, Woon Geon Shin, Doo Jin Kim, Kyung Ho Kim, Myoung Kuk Jang, Jin Heon Lee, Joo Seop Kim, Hak Yang Kim, Dong Joon Kim, Myung Seok Lee, Choong Kee Park 
World J Gastroenterol 21(13):3928-3935. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3928
Hyun Jeong Lee, Gwang Ha Kim, Do Youn Park, Bong Eun Lee, Hye Kyung Jeon, Joon Hyung Jhi, Geun Am Song 
World J Gastroenterol 21(13):3944-3952. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3944
Ji Won Park, Kyeong Min Kwak, Sung Eun Kim, Myoung Kuk Jang, Dong Joon Kim, Myung Seok Lee, Hyoung Su Kim, Choong Kee Park 
World J Gastroenterol 21(13):3953-3959. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3953
Chih-Chi Kuo, Yu-Lueng Shih, Her-Young Su, Ming-De Yan, Chung-Bao Hsieh, Chin-Yu Liu, Wei-Ting Huang, Mu-Hsien Yu, Ya-Wen Lin 
World J Gastroenterol 21(13):3960-3969. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3960
Jing-Huan Li, Xiao-Ying Xie, Lan Zhang, Fan Le, Ning-Ling Ge, Li-Xin Li, Yu-Hong Gan, Yi Chen, Ju-Bo Zhang, Tong-Chun Xue, Rong-Xin Chen, Jing-Lin Xia, Bo-Heng Zhang, Sheng-Long Ye, Yan-Hong Wang, Zheng-Gang Ren 
World J Gastroenterol 21(13):3970-3977. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3970
Lin Miao, Quan-Peng Li, Ming-Hui Zhu, Xian-Xiu Ge, Hong Yu, Fei Wang, Guo-Zhong Ji 
World J Gastroenterol 21(13):3978-3982. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.3978
Clinical Trials Study
Observational Study
Richard Alexander Awad, Santiago Camacho, Francisco Flores, Evelyn Altamirano, Mario Antonio García 
World J Gastroenterol 21(13):4000-4005. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.4000
Yuan-Yuan Zhang, Hong-Bo Chen, Yin Xu, Peng Huang, Jie Wang, Yun Zhang, Rong-Bin Yu, Jing Su 
World J Gastroenterol 21(13):4006-4013. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.4006
Prospective Study
Dalibor Opačić, Nadan Rustemović, Mirjana Kalauz, Pave Markoš, Zvonimir Ostojić, Matea Majerović, Iva Ledinsky, Ana Višnjić, Juraj Krznarić, Milorad Opačić 
World J Gastroenterol 21(13):4014-4019. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.4014
Jian-Zhuang Ren, Meng-Fan Zhang, Ai-Mei Rong, Xiang-Jie Fang, Kai Zhang, Guo-Hao Huang, Peng-Fei Chen, Zhao-Yang Wang, Xu-Hua Duan, Xin-Wei Han, Yan-Jie Liu 
World J Gastroenterol 21(13):4030-4037. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.4030
Meta-Analysis
Chang Seok Bang, In Soo Shin, Sung Wha Lee, Jin Bong Kim, Gwang Ho Baik, Ki Tae Suk, Jai Hoon Yoon, Yeon Soo Kim, Dong Joon Kim 
World J Gastroenterol 21(13):4038-4047. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.4038
Case Report
J Todd Kuenstner, William Chamberlin, Saleh A Naser, Michael T Collins, Coad Thomas Dow, John M Aitken, Stuart Weg, Grzegorz Telega, Kuruvilla John, David Haas, Torsten M Eckstein, Maher Kali, Christine Welch, Thomas Petrie 
World J Gastroenterol 21(13):4048-4062. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.4048
Francesco Giuseppe Foschi, Maria Cristina Morelli, Sara Savini, Anna Chiara Dall’Aglio, Arianna Lanzi, Matteo Cescon, Giorgio Ercolani, Alessandro Cucchetti, Antonio Daniele Pinna, Giuseppe Francesco Stefanini 
World J Gastroenterol 21(13):4063-4068. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.4063
José Ferrusquía, Isabel Pérez-Martínez, Ricardo Gómez de la Torre, María Luisa Fernández-Almira, Ruth de Francisco, Luis Rodrigo, Sabino Riestra 
World J Gastroenterol 21(13):4069-4077. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.4069
Mahmut Yuksel, Fatih Saygili, Orhan Coskun, Nuretdin Suna, Mustafa Kaplan, Ufuk Baris Kuzu, Zeki Mesut Yalin Kilic, Yasemin Ozderin Ozin, Ertugrul Kayacetin 
World J Gastroenterol 21(13):4078-4081. Published online Apr 7, 2015. doi: 10.3748/wjg.v21.i13.4078
Letters To The Editor