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Open-Access Journal
Editorial
Opinion Review
Review
Katharina Joechle, Jessica Guenzle, Claus Hellerbrand, Pavel Strnad, Thorsten Cramer, Ulf Peter Neumann, Sven Arke Lang 
World J Gastrointest Oncol 13(11):1632-1647. Published online Nov 15, 2021. doi: 10.4251/wjgo.v13.i11.1632
Minireviews
Yang Yang, Zi-Jian Zhang, Yu Wen, Li Xiong, Yun-Peng Huang, Yong-Xiang Wang, Kai Liu 
World J Gastrointest Oncol 13(11):1668-1679. Published online Nov 15, 2021. doi: 10.4251/wjgo.v13.i11.1668
Riccardo Inchingolo, Fabrizio Acquafredda, Valentina Ferraro, Letizia Laera, Gianmarco Surico, Alessia Surgo, Alba Fiorentino, Stefania Marini, Nicola de'Angelis, Riccardo Memeo, Stavros Spiliopoulos 
World J Gastrointest Oncol 13(11):1696-1708. Published online Nov 15, 2021. doi: 10.4251/wjgo.v13.i11.1696
Basic Study
Zhe Deng, Yong-Jie Teng, Qing Zhou, Zhao-Guang Ouyang, Yu-Xing Hu, Hong-Ping Long, Mei-Jie Hu, Si Mei, Feng-Xia Lin, Xin-Jun Dai, Bo-Yu Zhang, Ting Feng, Xue-Fei Tian 
World J Gastrointest Oncol 13(11):1725-1740. Published online Nov 15, 2021. doi: 10.4251/wjgo.v13.i11.1725
Case Control Study
Clinical Trials Study
Systematic Reviews
Nahed A Makhlouf, Muhammad Abdel-Gawad, Aya M Mahros, Sameh A Lashen, Mariam Zaghloul, Ahmed Eliwa, Eman E Elshemy, Zainab Ali-Eldin, Doaa Abdeltawab, Fathiya El-Raey, Dalia Omran, Marwa Khalaf, Nancy Fanous, Ahmed Shawkat Abdelmohsen, Ahmed Abu-Elfatth, Mohamed Abdelghani, Mahmoud Farouk, Mohamed Abdelaziz, Mohamed Alboraie 
World J Gastrointest Oncol 13(11):1791-1798. Published online Nov 15, 2021. doi: 10.4251/wjgo.v13.i11.1791
Faiza Ahmed, Jennifer Onwumeh-Okwundu, Zeynep Yukselen, Maria-Kassandra Endaya Coronel, Madiha Zaidi, Prathima Guntipalli, Vamsi Garimella, Sravya Gudapati, Marc Darlene Mezidor, Kim Andrews, Mohamad Mouchli, Endrit Shahini 
World J Gastrointest Oncol 13(11):1813-1832. Published online Nov 15, 2021. doi: 10.4251/wjgo.v13.i11.1813
Meta-Analysis
Letter to the Editor