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Open-Access Journal
Editorial
Niki Christou, Jeremy Meyer, Christian Toso, Frédéric Ris, Nicolas Christian Buchs 
World J Gastroenterol 25(31):4294-4299. Published online Aug 21, 2019. doi: 10.3748/wjg.v25.i31.4294
Review
Piera Zaccari, Vincenzo Cardinale, Carola Severi, Federica Pedica, Guido Carpino, Eugenio Gaudio, Claudio Doglioni, Maria Chiara Petrone, Domenico Alvaro, Paolo Giorgio Arcidiacono, Gabriele Capurso 
World J Gastroenterol 25(31):4343-4359. Published online Aug 21, 2019. doi: 10.3748/wjg.v25.i31.4343
Minireviews
Mariella Faccia, Maria Elena Ainora, Francesca Romana Ponziani, Laura Riccardi, Matteo Garcovich, Antonio Gasbarrini, Maurizio Pompili, Maria Assunta Zocco 
World J Gastroenterol 25(31):4437-4451. Published online Aug 21, 2019. doi: 10.3748/wjg.v25.i31.4437
Basic Study
Retrospective Study
Observational Study
Systematic Reviews
Akwi W Asombang, Nathaniel Chishinga, Alick Nkhoma, Jackson Chipaila, Bright Nsokolo, Martha Manda-Mapalo, Joao Filipe G Montiero, Lewis Banda, Kulwinder S Dua 
World J Gastroenterol 25(31):4512-4533. Published online Aug 21, 2019. doi: 10.3748/wjg.v25.i31.4512
Meta-Analysis
Davide Bellini, Flaminia Rivosecchi, Nicola Panvini, Marco Rengo, Damiano Caruso, Iacopo Carbone, Riccardo Ferrari, Pasquale Paolantonio, Andrea Laghi 
World J Gastroenterol 25(31):4555-4566. Published online Aug 21, 2019. doi: 10.3748/wjg.v25.i31.4555