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Open-Access Journal
Minireviews
Fernanda de Oliveira Lemos, Rodrigo M Florentino, Antônio Carlos Melo Lima Filho, Marcone Loiola dos Santos, M Fatima Leite 
World J Gastroenterol 25(44):6483-6494. Published online Nov 28, 2019. doi: 10.3748/wjg.v25.i44.6483
Basic Study
Retrospective Study
Observational Study
Systematic Review
Sara Nikolic, Ana Dugic, Corinna Steiner, Apostolos V Tsolakis, Ida Marie Haugen Löfman, J-Matthias Löhr, Miroslav Vujasinovic 
World J Gastroenterol 25(44):6561-6570. Published online Nov 28, 2019. doi: 10.3748/wjg.v25.i44.6561
Case Report