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Open-Access Journal
Opinion Review
Christoph G Dietrich, Konrad Schoppmeyer 
World J Gastroenterol 26(20):2464-2471. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2464
Eglantina Idrizaj, Rachele Garella, Roberta Squecco, Maria Caterina Baccari 
World J Gastroenterol 26(20):2472-2478. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2472
Review
Marco Bernardi, Anna Lucia Fedullo, Elisabetta Bernardi, Diego Munzi, Ilaria Peluso, Jonathan Myers, Florigio Romano Lista, Tommaso Sciarra 
World J Gastroenterol 26(20):2479-2497. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2479
Ilenia Bartolini, Matteo Risaliti, Maria Novella Ringressi, Filippo Melli, Giulia Nannini, Amedeo Amedei, Paolo Muiesan, Antonio Taddei 
World J Gastroenterol 26(20):2498-2513. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2498
Giulia Nannini, Gaia Meoni, Amedeo Amedei, Leonardo Tenori 
World J Gastroenterol 26(20):2514-2532. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2514
Dong-Qin Zhao, Hua Xue, Hai-Ji Sun 
World J Gastroenterol 26(20):2533-2549. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2533
Minireviews
Srikanth Vedachalam, Gokulakrishnan Balasubramanian, Garrie J Haas, Somashekar G Krishna 
World J Gastroenterol 26(20):2550-2558. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2550
Qi-Hui Zhou, Feng-Tian Wu, Lan-Tian Pang, Tian-Bao Zhang, Zhi Chen 
World J Gastroenterol 26(20):2559-2569. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2559
Basic Study
Karen Chiam, George C Mayne, Tingting Wang, David I Watson, Tanya S Irvine, Tim Bright, Lorelle T Smith, Imogen A Ball, Joanne M Bowen, Dorothy M Keefe, Sarah K Thompson, Damian J Hussey 
World J Gastroenterol 26(20):2570-2583. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2570
Marçal Yll, Maria Francesca Cortese, Mercedes Guerrero-Murillo, Gerard Orriols, Josep Gregori, Rosario Casillas, Carolina González, Sara Sopena, Cristina Godoy, Marta Vila, David Tabernero, Josep Quer, Ariadna Rando, Rosa Lopez-Martinez, Rafael Esteban, Mar Riveiro-Barciela, Maria Buti, Francisco Rodríguez-Frías 
World J Gastroenterol 26(20):2584-2598. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2584
Rexiati Ruze, Ya-Cheng Xiong, Jian-Wen Li, Ming-Wei Zhong, Qian Xu, Zhi-Bo Yan, Jian-Kang Zhu, Yu-Gang Cheng, San-Yuan Hu, Guang-Yong Zhang 
World J Gastroenterol 26(20):2599-2617. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2599
Clinical and Translational Research
Chiko Sato, Kingo Hirasawa, Yoko Tateishi, Yuichiro Ozeki, Atsushi Sawada, Ryosuke Ikeda, Takehide Fukuchi, Masafumi Nishio, Ryosuke Kobayashi, Makomo Makazu, Hiroaki Kaneko, Yoshiaki Inayama, Shin Maeda 
World J Gastroenterol 26(20):2618-2631. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2618
Case Control Study
Antonella Santonicola, Mario Gagliardi, Giovanni Asparago, Luna Carpinelli, Luigi Angrisani, Paola Iovino 
World J Gastroenterol 26(20):2632-2644. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2632
Retrospective Study
Apichaya Khlaiphuengsin, Natthaya Chuaypen, Pimpayao Sodsai, Supranee Buranapraditkun, Tadech Boonpiyathad, Nattiya Hirankarn, Pisit Tangkijvanich 
World J Gastroenterol 26(20):2645-2656. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2645
Prospective Study
Davide Ippolito, Silvia Girolama Drago, Anna Pecorelli, Cesare Maino, Giulia Querques, Ilaria Mariani, Cammillo Talei Franzesi, Sandro Sironi 
World J Gastroenterol 26(20):2657-2668. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2657
Systematic Reviews
Ilaria Umbro, Valerio Fabiani, Mario Fabiani, Francesco Angelico, Maria Del Ben 
World J Gastroenterol 26(20):2669-2681. Published online May 28, 2020. doi: 10.3748/wjg.v26.i20.2669
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