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Open-Access Journal
Editorial
Opinion Review
Review
Minireviews
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
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
Meta-Analysis
Letter to the Editor