BPG is committed to discovery and dissemination of knowledge
Open-Access Journal
Editorial
Review
Vanja Vaccaro, Isabella Sperduti, Sabrina Vari, Emilio Bria, Davide Melisi, Carlo Garufi, Carmen Nuzzo, Aldo Scarpa, Giampaolo Tortora, Francesco Cognetti, Michele Reni, Michele Milella 
World J Gastroenterol 21(16):4788-4801. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.4788
Basic Study
Eduardo José de Almeida Araújo, Larissa Marchi Zaniolo, Suellen Laís Vicentino, Marcelo Biondaro Góis, Jacqueline Nelisis Zanoni, Aristeu Vieira da Silva, Débora de Mello Gonçales Sant’Ana 
World J Gastroenterol 21(16):4829-4839. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.4829
Ke-Qi Han, Xue-Qun He, Meng-Yu Ma, Xiao-Dong Guo, Xue-Min Zhang, Jie Chen, Hui Han, Wei-Wei Zhang, Quan-Gang Zhu, Hua Nian, Li-Jun Ma 
World J Gastroenterol 21(16):4864-4874. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.4864
Case Control Study
Thomas Karlas, Joachim Berger, Nikita Garnov, Franziska Lindner, Harald Busse, Nicolas Linder, Alexander Schaudinn, Bettina Relke, Rima Chakaroun, Michael Tröltzsch, Johannes Wiegand, Volker Keim 
World J Gastroenterol 21(16):4894-4902. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.4894
Masakatsu Fukuzawa, Junichi Uematsu, Shin Kono, Sho Suzuki, Takemasa Sato, Naoko Yagi, Yuichiro Tsuji, Kenji Yagi, Chika Kusano, Takuji Gotoda, Takashi Kawai, Fuminori Moriyasu 
World J Gastroenterol 21(16):4903-4910. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.4903
Retrospective Cohort Study
Retrospective Study
Tilmann Graeter, Franziska Ehing, Suemeyra Oeztuerk, Richard Andrew Mason, Mark Martin Haenle, Wolfgang Kratzer, Thomas Seufferlein, Beate Gruener 
World J Gastroenterol 21(16):4925-4932. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.4925
Makoto Meguro, Toru Mizuguchi, Toshihiko Nishidate, Kenji Okita, Masayuki Ishii, Shigenori Ota, Tomomi Ueki, Emi Akizuki, Koichi Hirata 
World J Gastroenterol 21(16):4933-4945. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.4933
Ei Takahashi, Mitsuharu Fukasawa, Tadashi Sato, Shinichi Takano, Makoto Kadokura, Hiroko Shindo, Yudai Yokota, Nobuyuki Enomoto 
World J Gastroenterol 21(16):4946-4953. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.4946
Shi-Yong Li, Gang Chen, Jun-Feng Du, Guang Chen, Xiao-Jun Wei, Wei Cui, Fu-Yi Zuo, Bo Yu, Xing Dong, Xi-Qing Ji, Qiang Yuan 
World J Gastroenterol 21(16):4969-4974. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.4969
Clinical Trials Study
Fátima Higuera-de la Tijera, Alfredo I Servín-Caamaño, Aurora E Serralde-Zúñiga, Javier Cruz-Herrera, Eduardo Pérez-Torres, Juan M Abdo-Francis, Francisco Salas-Gordillo, José L Pérez-Hernández 
World J Gastroenterol 21(16):4975-4985. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.4975
Hai-Xia Shang, An-Qi Wang, Chun-Hui Bao, Huan-Gan Wu, Wei-Feng Chen, Lu-Yi Wu, Rong Ji, Ji-Meng Zhao, Yin Shi 
World J Gastroenterol 21(16):4986-4996. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.4986
Observational Study
Marco Milone, Antonio Mollo, Mario Musella, Paola Maietta, Loredana Maria Sosa Fernandez, Olena Shatalova, Alessandro Conforti, Gianni Barone, Giuseppe De Placido, Francesco Milone 
World J Gastroenterol 21(16):4997-5001. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.4997
Prospective Study
Hiroki Sato, Haruhiro Inoue, Haruo Ikeda, Chiaki Sato, Chainarong Phlanusittepha, Bu’Hussain Hayee, Esperanza Grace R Santi, Yasutoshi Kobayashi, Shin-ei Kudo 
World J Gastroenterol 21(16):5002-5008. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.5002
Yasuhiro Tamura, Yasushi Funaki, Shinya Izawa, Akihito Iida, Yoshiharu Yamaguchi, Kazunori Adachi, Naotaka Ogasawara, Makoto Sasaki, Hiroshi Kaneko, Kunio Kasugai 
World J Gastroenterol 21(16):5009-5016. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.5009
Randomized Controlled Trial
Takayoshi Suzuki, Masashi Matsushima, Aya Masui, Shingo Tsuda, Jin Imai, Jun Nakamura, Yoko Tsukune, Tetsufumi Uchida, Hiroki Yuhara, Muneki Igarashi, Jun Koike, Tetsuya Mine 
World J Gastroenterol 21(16):5023-5031. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.5023
Randomized Clinical Trial
Evidence-Based Medicine
Systematic Reviews
Jean-Luc Faucheron, Bertrand Trilling, Edouard Girard, Pierre-Yves Sage, Sandrine Barbois, Fabian Reche 
World J Gastroenterol 21(16):5049-5055. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.5049
Maximilian Stephens, Luke F Hourigan, Mark Appleyard, George Ostapowicz, Mark Schoeman, Paul V Desmond, Jane M Andrews, Michael Bourke, David Hewitt, David A Margolin, Gerald J Holtmann 
World J Gastroenterol 21(16):5056-5071. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.5056
Meta-Analysis
Zhi-Jun Dai, Yong-Ping Shao, Hua-Feng Kang, Wei Tang, Dan Xu, Yang Zhao, Di Liu, Meng Wang, Peng-Tao Yang, Xi-Jing Wang 
World J Gastroenterol 21(16):5081-5089. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.5081
Case Report
Shuya Shimizu, Itaru Naitoh, Takahiro Nakazawa, Kazuki Hayashi, Katsuyuki Miyabe, Hiromu Kondo, Yuji Nishi, Shuichiro Umemura, Yasuki Hori, Akihisa Kato, Hirotaka Ohara, Takashi Joh 
World J Gastroenterol 21(16):5090-5095. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.5090
Takashi Watanabe, Kunihiko Aoyagi, Yoshitaka Tomioka, Hideki Ishibashi, Shotaro Sakisaka 
World J Gastroenterol 21(16):5096-5098. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.5096
Yong Min Jo, Sung Wook Lee, Sang Young Han, Yang Hyun Baek, Ji Hye Ahn, Won Jong Choi, Ji Young Lee, Sang Ho Kim, Byeol A Yoon 
World J Gastroenterol 21(16):5105-5109. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.5105
Ra Ri Cha, Sang Soo Lee, Hyunjin Kim, Hong Jun Kim, Tae-Hyo Kim, Woon Tae Jung, Ok Jae Lee, Kyung Soo Bae, Sang-Ho Jeong, Chang Yoon Ha 
World J Gastroenterol 21(16):5110-5114. Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.5110