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Open-Access Journal
Editorial
Enrico Mini, Martina Catalano, Lorenzo Antonuzzo, Daniele Lavacchi, Giandomenico Roviello 
World J Gastroenterol 28(15):1503-1507. Published online Apr 21, 2022. doi: 10.3748/wjg.v28.i15.1503
Review
Lavinia-Patricia Mocan, Carmen Mihaela Mihu, Tudor Mocan, Cristina Adela Iuga, Zeno Spârchez, Cristian Tefas, Adelina Horhat, Iuliana Nenu, Rareș Crăciun, Mihaela Spârchez, Carmen Stanca Melincovici, Maria Ilieș 
World J Gastroenterol 28(15):1508-1525. Published online Apr 21, 2022. doi: 10.3748/wjg.v28.i15.1508
Minireviews
Ming-Ke Wang, Xue-Lu Yu, Li-Yun Zhou, Hong-Mei Si, Ju-Fen Hui, Deng-Yong Hou, Wei-Peng Li, Ji-Shun Yang 
World J Gastroenterol 28(15):1526-1535. Published online Apr 21, 2022. doi: 10.3748/wjg.v28.i15.1526
Basic Study
Shuang-Shuang Lu, Wen-Jia Liu, Qiu-Ya Niu, Chun-Yan Huo, Yu-Qing Cheng, En-Jing Wang, Rong-Nan Li, Fang-Fang Feng, Yi-Ming Cheng, Rong Liu, Jin Huang 
World J Gastroenterol 28(15):1536-1547. Published online Apr 21, 2022. doi: 10.3748/wjg.v28.i15.1536
Case Control Study
Jiyoung Yoon, Seung-Yeon Yoo, Young Soo Park, Kee Don Choi, Beom Su Kim, Moon-Won Yoo, In Seob Lee, Jeong Hwan Yook, Ga Hee Kim, Hee Kyong Na, Ji Yong Ahn, Jeong Hoon Lee, Kee Wook Jung, Do Hoon Kim, Ho June Song, Gin Hyug Lee, Hwoon-Yong Jung 
World J Gastroenterol 28(15):1548-1562. Published online Apr 21, 2022. doi: 10.3748/wjg.v28.i15.1548
Retrospective Cohort Study
Thaninee Prasoppokakorn, Wah-Kheong Chan, Vincent Wai-Sun Wong, Panyavee Pitisuttithum, Sanjiv Mahadeva, Nik Raihan Nik Mustapha, Grace Lai-Hung Wong, Howard Ho-Wai Leung, Pimsiri Sripongpun, Sombat Treeprasertsuk 
World J Gastroenterol 28(15):1563-1573. Published online Apr 21, 2022. doi: 10.3748/wjg.v28.i15.1563
Retrospective Study
Letter to the Editor