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Open-Access Journal
Editorial
Review
Teresa Arrigo, Salvatore Leonardi, Caterina Cuppari, Sara Manti, Angela Lanzafame, Gabriella D’Angelo, Eloisa Gitto, Lucia Marseglia, Carmelo Salpietro 
World J Gastroenterol 21(2):384-395. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.384
Mohamed Bejaoui, Eirini Pantazi, Emma Folch-Puy, Pedro M Baptista, Agustín García-Gil, René Adam, Joan Roselló-Catafau 
World J Gastroenterol 21(2):396-407. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.396
Roberto J Carvalho-Filho, Ana Cristina CA Feldner, Antonio Eduardo B Silva, Maria Lucia G Ferraz 
World J Gastroenterol 21(2):408-422. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.408
Minireviews
Basic Study
Sehe Dong Lee, Jung Wan Choe, Beom Jae Lee, Myoung Hee Kang, Moon Kyung Joo, Ji Hoon Kim, Jong Eun Yeon, Jong-Jae Park, Jae Seon Kim, Young-Tae Bak 
World J Gastroenterol 21(2):465-474. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.465
Wei-Yuan Wei, Lin-Hai Yan, Xiao-Tong Wang, Lei Li, Wen-Long Cao, Xiao-Shi Zhang, Ze-Xu Zhan, Han Yu, Yu-Bo Xie, Qiang Xiao 
World J Gastroenterol 21(2):491-501. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.491
Case Control Study
Retrospective Study
Peter Klare, Stefan Ascher, Alexander Hapfelmeier, Petra Wolf, Analena Beitz, Roland M Schmid, Stefan von Delius 
World J Gastroenterol 21(2):525-532. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.525
Keigo Suetani, Chiaki Okuse, Kazunari Nakahara, Yosuke Michikawa, Yohei Noguchi, Midori Suzuki, Ryo Morita, Nozomi Sato, Masaki Kato, Fumio Itoh 
World J Gastroenterol 21(2):533-540. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.533
Nozomi Kamijo, Akihiro Matsumoto, Takeji Umemura, Soichiro Shibata, Yuki Ichikawa, Takefumi Kimura, Michiharu Komatsu, Eiji Tanaka 
World J Gastroenterol 21(2):541-548. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.541
Shuhei Komatsu, Daisuke Ichikawa, Mahito Miyamae, Hiroki Shimizu, Hirotaka Konishi, Atsushi Shiozaki, Hitoshi Fujiwara, Kazuma Okamoto, Mitsuo Kishimoto, Eigo Otsuji 
World J Gastroenterol 21(2):549-555. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.549
Kyungyeon Hwang, In Ja Park, Chang Sik Yu, Seok-Byung Lim, Jong Lyul Lee, Yong Sik Yoon, Chan Wook Kim, Jin Cheon Kim 
World J Gastroenterol 21(2):563-570. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.563
Eun Hyo Jin, Dong Ho Lee, Sung-Ae Jung, Ki-Nam Shim, Ji Yeon Seo, Nayoung Kim, Cheol Min Shin, Hyuk Yoon, Hyun Chae Jung 
World J Gastroenterol 21(2):571-577. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.571
Shu Shen, Li Jiang, Guang-Qin Xiao, Lu-Nan Yan, Jia-Yin Yang, Tian-Fu Wen, Bo Li, Wen-Tao Wang, Ming-Qing Xu, Yong-Gang Wei 
World J Gastroenterol 21(2):584-592. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.584
Clinical Trials Study
Ayman El Nakeeb, Ahmad M Sultan, Emad Hamdy, Ehab El Hanafy, Ehab Atef, Tarek Salah, Ahmed A El Geidie, Tharwat Kandil, Mohamed El Shobari, Gamal El Ebidy 
World J Gastroenterol 21(2):609-615. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.609
Bhadravathi Marigowda Shivakumar, Harish Rotti, Thanvanthri Gururajan Vasudevan, Aswath Balakrishnan, Sanjiban Chakrabarty, Ganesh Bhat, Lakshmi Rao, Cannanore Ganesh Pai, Kapaettu Satyamoorthy 
World J Gastroenterol 21(2):616-622. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.616
Observational Study
Thein Myint, Seiji Shiota, Ratha-korn Vilaichone, New Ni, Than Than Aye, Miyuki Matsuda, Trang Thi Huyen Tran, Tomohisa Uchida, Varocha Mahachai, Yoshio Yamaoka 
World J Gastroenterol 21(2):629-636. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.629
Nahla A Azzam, Majid A Almadi, Hessah Hamad Alamar, Lamis Atyah Almalki, Rehab Nawaf Alrashedi, Rawabi Saleh Alghamdi, Waleed Al-hamoudi 
World J Gastroenterol 21(2):637-643. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.637
Prospective Study
Ali S Alfazari, Bayan Al-Dabbagh, Wafa Al-Dhaheri, Mazen S Taha, Ahmad A Chebli, Eva M Fontagnier, Zaher Koutoubi, Jose Kochiyi, Sherif M Karam, Abdul-Kader Souid 
World J Gastroenterol 21(2):644-652. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.644
Er-Li Gu, Yi-Qi Yu, Jia-Li Wang, Yan-Yan Ji, Xiu-Yun Ma, Qing Xie, Hong-Ying Pan, Shan-Min Wu, Jun Li, Cheng-Wei Chen, Xiao-Wei Xu, Yue-Er Wang, Guang-Bi Yao, Hong Wang, Wen-Hong Zhang 
World J Gastroenterol 21(2):653-660. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.653
Randomized Controlled Trial
Fariborz Mansour-Ghanaei, Farahnaz Joukar, Mohammad Reza Naghipour, Atena Forouhari, Seyed Mohammad Seyed Saadat 
World J Gastroenterol 21(2):661-666. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.661
Evidence-Based Medicine
Min Jung Jo, Ji Yeon Park, Joon Seon Song, Myeong-Cherl Kook, Keun Won Ryu, Soo-Jeong Cho, Jun Ho Lee, Byung-Ho Nam, Eun Kyung Hong, Il Ju Choi, Young-Woo Kim 
World J Gastroenterol 21(2):667-674. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.667
Systematic Reviews
Case Report
Man Fai Law, Cheuk Kei Wong, Chun Yin Pang, Hay Nun Chan, Ho Kei Lai, Chung Yin Ha, Celia Ng, Yiu Ming Yeung, Sze Fai Yip 
World J Gastroenterol 21(2):688-693. Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.688