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Open-Access Journal
Opinion Review
Minireviews
Retrospective Cohort Study
Mohammad I El Mouzan, Mohammed H AlEdreesi, Mohammed Y Hasosah, Abdulrahman A Al-Hussaini, Ahmad A Al Sarkhy, Asaad A Assiri 
World J Gastroenterol 26(4):416-423. Published online Jan 28, 2020. doi: 10.3748/wjg.v26.i4.416
Retrospective Study
Akiko Shida, Takashi Fukuyama, Nobue Futawatari, Haruki Ohmiya, Yoshinobu Ichiki, Tetsuro Yamashita, Yatsushi Nishi, Noritada Kobayashi, Hitoshi Yamazaki, Masahiko Watanabe, Yoshihito Takahashi 
World J Gastroenterol 26(4):424-432. Published online Jan 28, 2020. doi: 10.3748/wjg.v26.i4.424
Systematic Reviews
Case Report