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Open-Access Journal
Review
Minireviews
Toru Chiba, Masaharu Murata, Takahito Kawano, Makoto Hashizume, Tomohiko Akahoshi 
World J Gastrointest Oncol 13(8):822-834. Published online Aug 15, 2021. doi: 10.4251/wjgo.v13.i8.822
Lumir Kunovsky, Petr Dite, Petr Jabandziev, Jiri Dolina, Jitka Vaculova, Martin Blaho, Martina Bojkova, Jana Dvorackova, Magdalena Uvirova, Zdenek Kala, Jan Trna 
World J Gastrointest Oncol 13(8):835-844. Published online Aug 15, 2021. doi: 10.4251/wjgo.v13.i8.835
Basic Study
HMC Shantha Kumara, Hiromichi Miyagaki, Sajith A Herath, Erica Pettke, Xiaohong Yan, Vesna Cekic, Richard L Whelan 
World J Gastrointest Oncol 13(8):879-892. Published online Aug 15, 2021. doi: 10.4251/wjgo.v13.i8.879
Retrospective Cohort Study
Retrospective Study
Li-Ming Deng, Yi Wang, Jin-Huan Yang, Jia-Liang Li, Zi-Yan Chen, Wen-Ming Bao, Kai-Yu Chen, Xin-Fei Yao, Chong-Ming Zheng, Jiu-Yi Zheng, Zheng-Ping Yu, Bin Jin, Gang Chen 
World J Gastrointest Oncol 13(8):929-942. Published online Aug 15, 2021. doi: 10.4251/wjgo.v13.i8.929
Observational Study