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Open-Access Journal
Review
Wen-Qi Cui, Shi-Tong Wang, Dan Pan, Bing Chang, Li-Xuan Sang 
World J Gastrointest Oncol 12(2):149-172. Published online Feb 15, 2020. doi: 10.4251/wjgo.v12.i2.149
Minireviews
Panagiotis Sarantis, Evangelos Koustas, Adriana Papadimitropoulou, Athanasios G Papavassiliou, Michalis V Karamouzis 
World J Gastrointest Oncol 12(2):173-181. Published online Feb 15, 2020. doi: 10.4251/wjgo.v12.i2.173
Retrospective Cohort Study
In Rae Cho, Huapyong Kang, Jung Hyun Jo, Hee Seung Lee, Moon Jae Chung, Jeong Youp Park, Seung Woo Park, Si Young Song, Chansik An, Mi-Suk Park, Seungmin Bang 
World J Gastrointest Oncol 12(2):182-194. Published online Feb 15, 2020. doi: 10.4251/wjgo.v12.i2.182
Retrospective Study
Ji-Chuan Quan, Xu Guan, Chen-Xi Ma, Zheng Liu, Ming Yang, Zhi-Xun Zhao, Peng Sun, Meng Zhuang, Song Wang, Zheng Jiang, Xi-Shan Wang 
World J Gastrointest Oncol 12(2):195-204. Published online Feb 15, 2020. doi: 10.4251/wjgo.v12.i2.195
Observational Study
Karen Kaiser, Madison Lyleroehr, Sara Shaunfield, Leilani Lacson, Maria Corona, Sheetal Kircher, Malin Nittve, David Cella 
World J Gastrointest Oncol 12(2):205-218. Published online Feb 15, 2020. doi: 10.4251/wjgo.v12.i2.205
Wen-Yue Song, Xin Zhang, Qi Zhang, Peng-Jun Zhang, Rong Zhang 
World J Gastrointest Oncol 12(2):219-227. Published online Feb 15, 2020. doi: 10.4251/wjgo.v12.i2.219
Systematic Reviews
Case Report
Yue-E Liu, Jie Zong, Xue-Ji Chen, Rui Zhang, Xiao-Cang Ren, Zhi-Jun Guo, Chao-Xing Liu, Qiang Lin 
World J Gastrointest Oncol 12(2):237-247. Published online Feb 15, 2020. doi: 10.4251/wjgo.v12.i2.237
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