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Open-Access Journal
Review
Frederick H Koh, Jason MW Chua, Joselyn LJ Tan, Fung-Joon Foo, Winson J Tan, Sharmini S Sivarajah, Leonard Ming Li Ho, Bin-Tean Teh, Min-Hoe Chew 
World J Gastrointest Surg 13(8):734-755. Published online Aug 27, 2021. doi: 10.4240/wjgs.v13.i8.734
Minireviews
Yuki Kitano, Hiromitsu Hayashi, Takashi Matsumoto, Shotaro Kinoshita, Hiroki Sato, Yuta Shiraishi, Yosuke Nakao, Takayoshi Kaida, Katsunori Imai, Yo-ichi Yamashita, Hideo Baba 
World J Gastrointest Surg 13(8):756-763. Published online Aug 27, 2021. doi: 10.4240/wjgs.v13.i8.756
Varut Lohsiriwat, Romyen Jitmungngan 
World J Gastrointest Surg 13(8):764-771. Published online Aug 27, 2021. doi: 10.4240/wjgs.v13.i8.764
Kazuya Akahoshi, Keishi Komori, Kazuaki Akahoshi, Shinichi Tamura, Shigeki Osada, Yuki Shiratsuchi, Masaru Kubokawa 
World J Gastrointest Surg 13(8):772-787. Published online Aug 27, 2021. doi: 10.4240/wjgs.v13.i8.772
Milena Gulinac, Ivan P Novakov, Svetozar Antovic, Tsvetelina Velikova 
World J Gastrointest Surg 13(8):788-795. Published online Aug 27, 2021. doi: 10.4240/wjgs.v13.i8.788
Zun-Yi Zhang, Er-Lei Zhang, Bi-Xiang Zhang, Xiao-Ping Chen, Wei Zhang 
World J Gastrointest Surg 13(8):796-805. Published online Aug 27, 2021. doi: 10.4240/wjgs.v13.i8.796
Takashi Sakamoto, Tadao Kubota, Hiraku Funakoshi, Alan Kawarai Lefor 
World J Gastrointest Surg 13(8):806-813. Published online Aug 27, 2021. doi: 10.4240/wjgs.v13.i8.806
Sanne J Verkuijl, Florian Friedmacher, Patrick N Harter, Udo Rolle, Paul MA Broens 
World J Gastrointest Surg 13(8):822-833. Published online Aug 27, 2021. doi: 10.4240/wjgs.v13.i8.822
Juan Carlos Sebastián-Tomás, Aleix Martínez-Pérez, Elías Martínez-López, Nicola de'Angelis, Marcos Gómez Ruiz, Eduardo García-Granero 
World J Gastrointest Surg 13(8):834-847. Published online Aug 27, 2021. doi: 10.4240/wjgs.v13.i8.834
Retrospective Study
Observational Study
Orly Nadell Farber, Giselle I Gomez, Ashley L Titan, Andrea T Fisher, Christopher J Puntasecca, Veronica Toro Arana, Arielle Kempinsky, Clare E Wise, Kovi E Bessoff, Mary T Hawn, James R Korndorffer Jr, Joseph D Forrester, Micaela M Esquivel 
World J Gastrointest Surg 13(8):859-870. Published online Aug 27, 2021. doi: 10.4240/wjgs.v13.i8.859
Meta-Analysis
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