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Open-Access Journal
Editorial
Alexa Trovato, Alla Turshudzhyan, Micheal Tadros 
World J Gastroenterol 27(34):5625-5629. Published online Sep 14, 2021. doi: 10.3748/wjg.v27.i34.5625
Review
José A Morales-González, Liliana Anguiano-Robledo, Ángel Morales-González, Eduardo Osiris Madrigal-Santillán, Marlet Martínez-Archundia, Marcelo Angeles-Valencia, Jazmín García-Machorro, Nancy Vargas-Mendoza 
World J Gastroenterol 27(34):5630-5665. Published online Sep 14, 2021. doi: 10.3748/wjg.v27.i34.5630
Danijela Ristic-Medic, Snjezana Petrovic, Aleksandra Arsic, Vesna Vucic 
World J Gastroenterol 27(34):5682-5699. Published online Sep 14, 2021. doi: 10.3748/wjg.v27.i34.5682
Minireviews
Linda S Lee 
World J Gastroenterol 27(34):5700-5714. Published online Sep 14, 2021. doi: 10.3748/wjg.v27.i34.5700
Wei Liu, Xue Liu, Mei Peng, Gong-Quan Chen, Peng-Hua Liu, Xin-Wu Cui, Fan Jiang, Christoph F Dietrich 
World J Gastroenterol 27(34):5715-5726. Published online Sep 14, 2021. doi: 10.3748/wjg.v27.i34.5715
Yuri L Boteon, Paulo N Martins, Paolo Muiesan, Andrea Schlegel 
World J Gastroenterol 27(34):5727-5736. Published online Sep 14, 2021. doi: 10.3748/wjg.v27.i34.5727
Retrospective Cohort Study
Chia-Cheng Lee, Yu-Cheng Kuo, Je-Ming Hu, Pi-Kai Chang, Chien-An Sun, Tsan Yang, Chuan-Wang Li, Chao-Yang Chen, Fu-Huang Lin, Chih-Hsiung Hsu, Yu-Ching Chou 
World J Gastroenterol 27(34):5737-5752. Published online Sep 14, 2021. doi: 10.3748/wjg.v27.i34.5737
Retrospective Study
Yin-Lian Wu, Rahul Kumar, Ming-Fang Wang, Medha Singh, Jiao-Feng Huang, Yue-Yong Zhu, Su Lin 
World J Gastroenterol 27(34):5753-5763. Published online Sep 14, 2021. doi: 10.3748/wjg.v27.i34.5753
Observational Study
Yen-Tzeng Lin, Chun-Ju Chiang, Ya-Wen Yang, Shih-Pei Huang, San-Lin You 
World J Gastroenterol 27(34):5764-5774. Published online Sep 14, 2021. doi: 10.3748/wjg.v27.i34.5764
Meta-Analysis
Qurat Ul Ain, Yasir Bashir, Linda Kelleher, David M Bourne, Suzanne M Egan, Jean McMahon, Laura Keaskin, Oonagh M Griffin, Kevin C Conlon, Sinead N Duggan 
World J Gastroenterol 27(34):5775-5792. Published online Sep 14, 2021. doi: 10.3748/wjg.v27.i34.5775
Letter to the Editor
Anna Di Sessa, Stefano Guarino, Rosa Melone, Rossella Francesca De Simone, Pierluigi Marzuillo, Emanuele Miraglia del Giudice 
World J Gastroenterol 27(34):5793-5795. Published online Sep 14, 2021. doi: 10.3748/wjg.v27.i34.5793
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