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Open-Access Journal
Minireviews
Basic Study
Chang-Wen Yuan, Xue-Liang Sun, Li-Chao Qiao, Hai-Xia Xu, Ping Zhu, Hong-Jin Chen, Bo-Lin Yang 
World J Gastroenterol 25(47):6813-6822. Published online Dec 21, 2019. doi: 10.3748/wjg.v25.i47.6813
He-Ying Zhou, Chun-Qi Wu, En-Xu Bi 
World J Gastroenterol 25(47):6823-6834. Published online Dec 21, 2019. doi: 10.3748/wjg.v25.i47.6823
Retrospective Cohort Study
Judith de Vos-Geelen, Sandra ME Geurts, Margreet van Putten, Liselot BJ Valkenburg-van Iersel, Heike I Grabsch, Nadia Haj Mohammad, Frank JP Hoebers, Chantal V Hoge, Paul M Jeene, Evelien JM de Jong, Hanneke WM van Laarhoven, Tom Rozema, Marije Slingerland, Vivianne CG Tjan-Heijnen, Grard AP Nieuwenhuijzen, Valery EPP Lemmens 
World J Gastroenterol 25(47):6835-6846. Published online Dec 21, 2019. doi: 10.3748/wjg.v25.i47.6835
Retrospective Study
Observational Study
Arvind Dasari, Vijay N Joish, Raul Perez-Olle, Samyukta Dharba, Kavitha Balaji, Daniel M Halperin 
World J Gastroenterol 25(47):6857-6865. Published online Dec 21, 2019. doi: 10.3748/wjg.v25.i47.6857
Systematic Reviews
Sriharan Selvaratnam, Santiago Gullino, Lisa Shim, Eric Lee, Alice Lee, Sudarshan Paramsothy, Rupert W Leong 
World J Gastroenterol 25(47):6866-6875. Published online Dec 21, 2019. doi: 10.3748/wjg.v25.i47.6866
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