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Open-Access Journal
Frontier
Matthew Phanchana, Phurt Harnvoravongchai, Supapit Wongkuna, Tanaporn Phetruen, Wichuda Phothichaisri, Supakan Panturat, Methinee Pipatthana, Sitthivut Charoensutthivarakul, Surang Chankhamhaengdecha, Tavan Janvilisri 
World J Gastroenterol 27(42):7210-7232. Published online Nov 14, 2021. doi: 10.3748/wjg.v27.i42.7210
Opinion Review
Giuseppe Losurdo, Milena Di Leo, Edoardo Santamato, Monica Arena, Maria Rendina, Carmelo Luigiano, Enzo Ierardi, Alfredo Di Leo 
World J Gastroenterol 27(42):7233-7239. Published online Nov 14, 2021. doi: 10.3748/wjg.v27.i42.7233
Niall Philip Hardy, Ronan Ambrose Cahill 
World J Gastroenterol 27(42):7240-7246. Published online Nov 14, 2021. doi: 10.3748/wjg.v27.i42.7240
Review
Garance Coquant, Doriane Aguanno, Sandrine Pham, Nathan Grellier, Sophie Thenet, Véronique Carrière, Jean-Pierre Grill, Philippe Seksik 
World J Gastroenterol 27(42):7247-7270. Published online Nov 14, 2021. doi: 10.3748/wjg.v27.i42.7247
Minireviews
Basic Study
Yung-Yu Hsieh, Shui-Yi Tung, Hung-Yu Pan, Te-Sheng Chang, Kuo-Liang Wei, Wei-Ming Chen, Yi-Fang Deng, Chung-Kuang Lu, Yu-Hsuan Lai, Cheng-Shyong Wu, Chin Li 
World J Gastroenterol 27(42):7311-7323. Published online Nov 14, 2021. doi: 10.3748/wjg.v27.i42.7311
Matteo Bianchini, Maria Anita Giambelluca, Maria Concetta Scavuzzo, Gregorio Di Franco, Simone Guadagni, Matteo Palmeri, Niccolò Furbetta, Desirée Gianardi, Niccola Funel, Claudio Ricci, Raffaele Gaeta, Luca Emanuele Pollina, Alfredo Falcone, Caterina Vivaldi, Giulio Di Candio, Francesca Biagioni, Carla Letizia Busceti, Luca Morelli, Francesco Fornai 
World J Gastroenterol 27(42):7324-7339. Published online Nov 14, 2021. doi: 10.3748/wjg.v27.i42.7324
Min-Woo Chung, Moon-Ju Kim, Eun Jeong Won, Yu Jeong Lee, Yong-Woon Yun, Sung Bum Cho, Young-Eun Joo, Jun-Eul Hwang, Woo Kyun Bae, Ik-Joo Chung, Myung Geun Shin, Jong Hee Shin 
World J Gastroenterol 27(42):7340-7349. Published online Nov 14, 2021. doi: 10.3748/wjg.v27.i42.7340
Retrospective Cohort Study
Shimaa Afify, Basem Eysa, Fatma Abdel Hamid, Omnia M Abo-Elazm, Mohamed A Edris, Rabab Maher, Ahmed Abdelhalim, Muhammad Mostafa Abdel Ghaffar, Dalia A Omran, Hend Ibrahim Shousha 
World J Gastroenterol 27(42):7362-7375. Published online Nov 14, 2021. doi: 10.3748/wjg.v27.i42.7362
Retrospective Study
Observational Study
Kim Hay Be, Richard Khor, Daryl Lim Joon, Ben Starvaggi, Michael Chao, Sweet Ping Ng, Michael Ng, Leonardo Zorron Cheng Tao Pu, Marios Efthymiou, Rhys Vaughan, Sujievvan Chandran 
World J Gastroenterol 27(42):7387-7401. Published online Nov 14, 2021. doi: 10.3748/wjg.v27.i42.7387