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Open-Access Journal
Frontier
Min Li, Dan Shang, Chu-Xing Chai, Si-Qin Wang, Zheng-Feng Zhu, Bi-Rong Wang, Feng Zhu 
World J Gastrointest Surg 13(12):1523-1535. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1523
Review
Yi Yin, Zhen-Xing Zhu, Zhun Li, Yu-Sheng Chen, Wei-Ming Zhu 
World J Gastrointest Surg 13(12):1536-1549. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1536
Lei Xu, Lin Chen, Wei Zhang 
World J Gastrointest Surg 13(12):1550-1566. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1550
An Huang, Yong Yang, Jing-Yi Shi, Yu-Kun Li, Jing-Xuan Xu, Yu Cheng, Jin Gu 
World J Gastrointest Surg 13(12):1567-1583. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1567
Minireviews
Milutin Bulajic, Salvatore Francesco Vadalà di Prampero, Ivo Boškoski, Guido Costamagna 
World J Gastrointest Surg 13(12):1584-1596. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1584
Benno Traub, Hans Günther Beger, Reinhard Bittner, Shu-You Peng, Jiang-Tao Li, Zhen-Ling Ji, Silvia Sander, Miriam Schatz, Kathleen Danenberg, Peter Danenberg, Catharina Maulbecker-Armstrong, Peter Suhr, Erwin Röttinger, Wilhelm Gaus, Ernst-Dietrich Kreuser, Ludger Staib, Marko Kornmann, Karl-Heinrich Link 
World J Gastrointest Surg 13(12):1597-1614. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1597
Xiao Cui, Xiao-Ping Geng, Da-Chen Zhou, Ming-Hao Yang, Hui Hou 
World J Gastrointest Surg 13(12):1615-1627. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1615
Retrospective Study
Salvatore Agnes, Alfonso Wolfango Avolio, Guido Costamagna, Vincenzo Perri, Andrea Tringali, Federica Galiandro, Francesco Giovinazzo, Erida Nure, Francesco Frongillo, Antonio Franco, Giuseppe Bianco, Gabriele Spoletini 
World J Gastrointest Surg 13(12):1628-1637. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1628
Francisco Javier Perez Lara, Rogelio Zubizarreta Jimenez, Francisco Javier Moya Donoso, Jose Manuel Hernández Gonzalez, Tatiana Prieto-Puga Arjona, Arturo del Rey Moreno, Maria Pitarch Martinez 
World J Gastrointest Surg 13(12):1638-1650. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1638
Zhu-Liang Zhang, Min-Si Peng, Ze-Ming Chen, Ting Long, Li-Sheng Wang, Zheng-Lei Xu 
World J Gastrointest Surg 13(12):1651-1659. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1651
Marko Murruste, Ülle Kirsimägi, Karri Kase, Tatjana Veršinina, Peep Talving, Urmas Lepner 
World J Gastrointest Surg 13(12):1673-1684. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1673
Pei-Pei Wang, Chen Lin, Jiao-Lin Zhou, Kai-Wen Xu, Hui-Zhong Qiu, Bin Wu 
World J Gastrointest Surg 13(12):1685-1695. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1685
Antonella Delvecchio, Riccardo Inchingolo, Rita Laforgia, Francesca Ratti, Maximiliano Gelli, Massimiliano Ferdinando Anelli, Alexis Laurent, Giulio Vitali, Paolo Magistri, Giacomo Assirati, Emanuele Felli, Taiga Wakabayashi, Patrick Pessaux, Tullio Piardi, Fabrizio di Benedetto, Nicola de'Angelis, Javier Briceño, Antonio Rampoldi, Renè Adam, Daniel Cherqui, Luca Antonio Aldrighetti, Riccardo Memeo 
World J Gastrointest Surg 13(12):1696-1707. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1696
Observational Study
Sanja Stojsavljevic-Shapeski, Lucija Virovic-Jukic, Davor Tomas, Marko Duvnjak, Vedran Tomasic, Davor Hrabar, Dominik Kralj, Ivan Budimir, Neven Barsic, Neven Ljubicic 
World J Gastrointest Surg 13(12):1708-1720. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1708
Systematic Reviews
Angelo Gabriele Epifani, Diletta Cassini, Roberto Cirocchi, Caterina Accardo, Francesca Di Candido, Massimiliano Ardu, Gianandrea Baldazzi 
World J Gastrointest Surg 13(12):1721-1735. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1721
Georgios Geropoulos, Kyriakos Psarras, Dimitrios Giannis, Eirini Chrysovalantou Martzivanou, Maria Papaioannou, Christos Dimitrios Kakos, Efstathios Theodoros Pavlidis, Nikolaos Symeonidis, Georgios Koliakos, Theodoros Efstathios Pavlidis 
World J Gastrointest Surg 13(12):1736-1753. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1736
Anna Przedlacka, Gianluca Pellino, Jordan Fletcher, Fernando Bello, Paris P Tekkis, Christos Kontovounisios 
World J Gastrointest Surg 13(12):1754-1769. Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1754
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