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Open-Access Journal
Opinion Review
Review
Andrés Gómez-Aldana, Mario Jaramillo-Santos, Andrés Delgado, Carlos Jaramillo, Adán Lúquez-Mindiola 
World J Gastroenterol 25(32):4598-4613. Published online Aug 28, 2019. doi: 10.3748/wjg.v25.i32.4598
Minireviews
Basic Study
Retrospective Study
Observational Study
Prospective Study
Xiu-Juan Chang, Chao Sun, Yan Chen, Xiao-Dong Li, Zu-Jiang Yu, Zheng Dong, Wen-Lin Bai, Xiao-Dong Wang, Zhi-Qin Li, Da Chen, Wen-Juan Du, Hao Liao, Qi-Yu Jiang, Li-Jun Sun, Yin-Yin Li, Cui-Hong Zhang, Dong-Ping Xu, Yong-Ping Chen, Qin Li, Yong-Ping Yang 
World J Gastroenterol 25(32):4764-4778. Published online Aug 28, 2019. doi: 10.3748/wjg.v25.i32.4764
Systematic Reviews
Ieva Stundiene, Julija Sarnelyte, Ausma Norkute, Sigita Aidietiene, Valentina Liakina, Laura Masalaite, Jonas Valantinas 
World J Gastroenterol 25(32):4779-4795. Published online Aug 28, 2019. doi: 10.3748/wjg.v25.i32.4779