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Open-Access Journal
Editorial
Review
Milena Peruhova, Monika Peshevska-Sekulovska, Boris Krastev, Gabriela Panayotova, Viktoriya Georgieva, Rossitza Konakchieva, Georgi Nikolaev, Tsvetelina Veselinova Velikova 
World J Gastroenterol 26(42):6556-6571. Published online Nov 14, 2020. doi: 10.3748/wjg.v26.i42.6556
Minireviews
Basic Study
Retrospective Cohort Study
Observational Study
Marta Hernández-Conde, Elba Llop, Carlos Fernández Carrillo, Beatriz Tormo, Javier Abad, Luis Rodriguez, Christie Perelló, Marta López Gomez, José Luis Martínez-Porras, Natalia Fernández Puga, Maria Trapero-Marugan, Enrique Fraga, Carlos Ferre Aracil, José Luis Calleja Panero 
World J Gastroenterol 26(42):6658-6668. Published online Nov 14, 2020. doi: 10.3748/wjg.v26.i42.6658
Prospective Study
Yoshiki Niwa, Masanao Nakamura, Hiroki Kawashima, Takeshi Yamamura, Keiko Maeda, Tsunaki Sawada, Yasuyuki Mizutani, Eri Ishikawa, Takuya Ishikawa, Naomi Kakushima, Kazuhiro Furukawa, Eizaburo Ohno, Takashi Honda, Masatoshi Ishigami, Mitsuhiro Fujishiro 
World J Gastroenterol 26(42):6669-6678. Published online Nov 14, 2020. doi: 10.3748/wjg.v26.i42.6669
Systematic Reviews
Case Report
Masahiro Hirakawa, Kohichi Takada, Masanori Sato, Chisa Fujita, Naotaka Hayasaka, Takayuki Nobuoka, Shintaro Sugita, Aki Ishikawa, Miyako Mizukami, Hiroyuki Ohnuma, Kazuyuki Murase, Koji Miyanishi, Masayoshi Kobune, Ichiro Takemasa, Tadashi Hasegawa, Akihiro Sakurai, Junji Kato 
World J Gastroenterol 26(42):6689-6697. Published online Nov 14, 2020. doi: 10.3748/wjg.v26.i42.6689