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Open-Access Journal
Editorial
Review
Minireviews
Basic Study
Retrospective Cohort Study
Hirotaka Konishi, Daisuke Ichikawa, Hiroshi Itoh, Kenichiro Fukuda, Naoki Kakihara, Manabu Takemura, Kaori Okugawa, Kiyoshi Uchiyama, Masashi Nakata, Hiroshi Nishi, Toshiyuki Kosuga, Shuhei Komatsu, Kazuma Okamoto, Eigo Otsuji 
World J Gastroenterol 23(7):1215-1223. Published online Feb 21, 2017. doi: 10.3748/wjg.v23.i7.1215
Retrospective Study
Observational Study
Raluca Niculina Ciurea, Ion Rogoveanu, Daniel Pirici, Georgică-Costinel Târtea, Costin Teodor Streba, Cristina Florescu, Bogdan Cătălin, Ileana Puiu, Elena-Anca Târtea, Cristin Constantin Vere 
World J Gastroenterol 23(7):1250-1261. Published online Feb 21, 2017. doi: 10.3748/wjg.v23.i7.1250
Systematic Reviews
Meta-Analysis
Case Report