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Open-Access Journal
Minireviews
Maria Chiara Verga, Stefano Mazza, Francesco Azzolini, Fabrizio Cereatti, Clara Benedetta Conti, Andrea Drago, Sara Soro, Biagio Elvo, Roberto Grassia 
World J Gastrointest Surg 14(1):12-23. Published online Jan 27, 2022. doi: 10.4240/wjgs.v14.i1.12
Retrospective Cohort Study
Ramiro Manuel Fernandez-Placencia, Paola Montenegro, Melvy Guerrero, Mariana Serrano, Emperatriz Ortega, Mercedes Bravo, Lourdes Huanca, Stéphane Bertani, Juan Manuel Trejo, Patricia Webb, Jenny Malca-Vasquez, Luis Taxa, Alberto Lachos-Davila, Juan Celis-Zapata, Carlos Luque-Vasquez, Eduardo Payet, Eloy Ruiz, Francisco Berrospi 
World J Gastrointest Surg 14(1):24-35. Published online Jan 27, 2022. doi: 10.4240/wjgs.v14.i1.24
Retrospective Study
Masashi Takeuchi, Hirofumi Kawakubo, Satoru Matsuda, Shuhei Mayanagi, Tomoyuki Irino, Jun Okui, Kazumasa Fukuda, Rieko Nakamura, Norihito Wada, Hiroya Takeuchi, Yuko Kitagawa 
World J Gastrointest Surg 14(1):46-55. Published online Jan 27, 2022. doi: 10.4240/wjgs.v14.i1.46
Chiyoe Shirota, Akinari Hinoki, Takahisa Tainaka, Wataru Sumida, Fumie Kinoshita, Kazuki Yokota, Satoshi Makita, Hizuru Amano, Yoichi Nakagawa, Hiroo Uchida 
World J Gastrointest Surg 14(1):56-63. Published online Jan 27, 2022. doi: 10.4240/wjgs.v14.i1.56