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Open-Access Journal
Review
Basic Study
Dou Dou, Yan-Fen Shi, Qing Liu, Jie Luo, Ji-Xi Liu, Meng Liu, Ying-Ying Liu, Yuan-Liang Li, Xu-Dong Qiu, Huang-Ying Tan 
World J Gastroenterol 24(5):573-582. Published online Feb 7, 2018. doi: 10.3748/wjg.v24.i5.573
Case Control Study
Retrospective Cohort Study
Retrospective Study
Grace Gathungu, Yuanhao Zhang, Xinyu Tian, Erin Bonkowski, Leahana Rowehl, Julia Krumsiek, Billy Nix, Claudia Chalk, Bruce Trapnell, Wei Zhu, Rodney Newberry, Lee Denson, Ellen Li 
World J Gastroenterol 24(5):623-630. Published online Feb 7, 2018. doi: 10.3748/wjg.v24.i5.623
Observational Study
Pierre Baillet, Guillaume Cadiot, Marion Goutte, Felix Goutorbe, Hedia Brixi, Christine Hoeffel, Christophe Allimant, Maud Reymond, Hélène Obritin-Guilhen, Benoit Magnin, Gilles Bommelaer, Bruno Pereira, Constance Hordonneau, Anthony Buisson 
World J Gastroenterol 24(5):641-650. Published online Feb 7, 2018. doi: 10.3748/wjg.v24.i5.641
Case Report
Hongsik Kim, Kyung Sik Yi, Won-Dong Kim, Seung-Myoung Son, Yaewon Yang, Jihyun Kwon, Hye Sook Han 
World J Gastroenterol 24(5):651-656. Published online Feb 7, 2018. doi: 10.3748/wjg.v24.i5.651