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Open-Access Journal
Editorial
Chelsea V Hayman, Dinesh Vyas 
World J Gastroenterol 27(3):233-239. Published online Jan 21, 2021. doi: 10.3748/wjg.v27.i3.233
Basic Study
Hong-Liang Zang, Fu-Jian Ji, Hai-Ying Ju, Xiao-Feng Tian 
World J Gastroenterol 27(3):240-254. Published online Jan 21, 2021. doi: 10.3748/wjg.v27.i3.240
Retrospective Study
Cai-Zhi Huang, Jie Zhang, Lin Zhang, Cui-Hua Yu, Yi Mo, Li-Ya Mo 
World J Gastroenterol 27(3):255-266. Published online Jan 21, 2021. doi: 10.3748/wjg.v27.i3.255
Josh Bleicher, Jessica N Cohan, Lyen C Huang, William Peche, T Bartley Pickron, Courtney L Scaife, Tawnya L Bowles, John R Hyngstrom, Elliot A Asare 
World J Gastroenterol 27(3):267-280. Published online Jan 21, 2021. doi: 10.3748/wjg.v27.i3.267
Observational Study
Bing Li, Shi-Lun Cai, Wei-Min Tan, Ji-Chun Li, Ayimukedisi Yalikong, Xiao-Shuang Feng, Hon-Ho Yu, Pin-Xiang Lu, Zhen Feng, Li-Qing Yao, Ping-Hong Zhou, Bo Yan, Yun-Shi Zhong 
World J Gastroenterol 27(3):281-293. Published online Jan 21, 2021. doi: 10.3748/wjg.v27.i3.281
Case Report
Hideaki Kojima, Minoru Kitago, Eisuke Iwasaki, Yohei Masugi, Yohji Matsusaka, Hiroshi Yagi, Yuta Abe, Yasushi Hasegawa, Shutaro Hori, Masayuki Tanaka, Yutaka Nakano, Yusuke Takemura, Seiichiro Fukuhara, Yoshiyuki Ohara, Michiie Sakamoto, Shigeo Okuda, Yuko Kitagawa 
World J Gastroenterol 27(3):294-304. Published online Jan 21, 2021. doi: 10.3748/wjg.v27.i3.294
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