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Open-Access Journal
Review
Mary A Atia, Francisco C Ramirez, Suryakanth R Gurudu 
World J Gastrointest Endosc 7(4):328-335. Published online Apr 16, 2015. doi: 10.4253/wjge.v7.i4.328
Masaya Iwamuro, Hiroyuki Okada, Kazuhiro Matsueda, Tomoki Inaba, Chiaki Kusumoto, Atsushi Imagawa, Kazuhide Yamamoto 
World J Gastrointest Endosc 7(4):336-345. Published online Apr 16, 2015. doi: 10.4253/wjge.v7.i4.336
Minireviews
Jesús Espinel, Eugenia Pinedo, Vanesa Ojeda, Maria Guerra del Rio 
World J Gastrointest Endosc 7(4):370-380. Published online Apr 16, 2015. doi: 10.4253/wjge.v7.i4.370
David Ruiz-Clavijo, Belen González de la Higuera, Juan J Vila 
World J Gastrointest Endosc 7(4):381-388. Published online Apr 16, 2015. doi: 10.4253/wjge.v7.i4.381
Retrospective Study
Prospective Study
Meta-Analysis
Miguel A Tanimoto, M Lourdes Guerrero, Yoshinori Morita, Jonathan Aguirre-Valadez, Elisa Gomez, Carlos Moctezuma-Velazquez, Jose A Estradas-Trujillo, Miguel A Valdovinos, Luis F Uscanga, Rikiya Fujita 
World J Gastrointest Endosc 7(4):417-428. Published online Apr 16, 2015. doi: 10.4253/wjge.v7.i4.417
Case Report