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Open-Access Journal
Opinion Review
Minireviews
Case Control Study
Retrospective Cohort Study
Jong Beom Kim, Young Il Kim, Yong Sik Yoon, Jihun Kim, Seo Young Park, Jong Lyul Lee, Chan Wook Kim, In Ja Park, Seok-Byung Lim, Chang Sik Yu, Jin Cheon Kim 
World J Clin Cases 9(24):6999-7008. Published online Aug 26, 2021. doi: 10.12998/wjcc.v9.i24.6999
Retrospective Study
Systematic Reviews
Meta-Analysis
Case Report
Koichi Kimura, Eisuke Adachi, Ayako Toyohara, Sachie Omori, Kaoru Ezaki, Ryo Ihara, Takahiro Higashi, Kippei Ohgaki, Shuhei Ito, Shin-ichiro Maehara, Toshihiko Nakamura, Yoshihiko Maehara 
World J Clin Cases 9(24):7224-7230. Published online Aug 26, 2021. doi: 10.12998/wjcc.v9.i24.7224