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Open-Access Journal
Minireviews
Marcella Pesce, Martina Cargiolli, Sara Cassarano, Barbara Polese, Barbara De Conno, Laura Aurino, Nicola Mancino, Giovanni Sarnelli 
World J Gastroenterol 26(5):456-465. Published online Feb 7, 2020. doi: 10.3748/wjg.v26.i5.456
Osamu Toyoshima, Toshihiro Nishizawa, Kazuhiko Koike 
World J Gastroenterol 26(5):466-477. Published online Feb 7, 2020. doi: 10.3748/wjg.v26.i5.466
Basic Study
Case Control Study
Retrospective Cohort Study
Ling Ding, Hong-Yan Chen, Jin-Yun Wang, Hui-Fang Xiong, Wen-Hua He, Liang Xia, Nong-Hua Lu, Yin Zhu 
World J Gastroenterol 26(5):514-523. Published online Feb 7, 2020. doi: 10.3748/wjg.v26.i5.514
Retrospective Study
Case Report
Henning Grønbæk, Ida Vogel, Peter Ott, Jenny Blechingberg, Naja Becher, Chun-Shan Wei 
World J Gastroenterol 26(5):550-561. Published online Feb 7, 2020. doi: 10.3748/wjg.v26.i5.550
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