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Open-Access Journal
Field of Vision
Dagmar Steinmair, Martin Fittner, Thilo Sauter, Dietmar Dietrich, Henriette Löffler-Stastka 
World J Meta-Anal 9(6):474-487. Published online Dec 28, 2021. doi: 10.13105/wjma.v9.i6.474
Opinion Review
Ya-Peng Yang, Xue-Ying Zhang, Bo-Ta Cui, Hang Zhang, Zhi-Feng Wu, Xiang Tan, Wei Cheng, Xi Zhu, Fa-Ming Zhang, Huan-Long Qin, Hong Wei 
World J Meta-Anal 9(6):496-504. Published online Dec 28, 2021. doi: 10.13105/wjma.v9.i6.496
Review
Miriam López-Gómez, Belén García de Santiago, Pedro-David Delgado-López, Eduardo Malmierca, Jesús González-Olmedo, César Gómez-Raposo, Carmen Sandoval, Pilar Ruiz-Seco, Nora Escribano, Jorge Francisco Gómez-Cerezo, Enrique Casado 
World J Meta-Anal 9(6):505-521. Published online Dec 28, 2021. doi: 10.13105/wjma.v9.i6.505
Manasvi Gupta, Gaurav Manek, Kaitlyn Dombrowski, Rakhi Maiwall 
World J Meta-Anal 9(6):522-542. Published online Dec 28, 2021. doi: 10.13105/wjma.v9.i6.522
Minireviews
Ezekiel Uba Nwose, Phillip Taderera Bwititi, Otovwe Agofure, Echinei Jacob Oshionwu, Ekenechukwu Esther Young, Eferhire Aganbi, Solomon Ekwuweokwuenu Egwenu, Helen Egoyibo Chime, Fortunatus Darius Gbeinbo, Alex Odufu, John Nwakaego Okuzor, Azuka Okuleye, Kennedy Aninze, Innocent Chuks Onyia, Euzebus Chinonye Ezugwu, Eunice Obiajuru Igumbor, Ifeoma Isabel Ulasi 
World J Meta-Anal 9(6):543-556. Published online Dec 28, 2021. doi: 10.13105/wjma.v9.i6.543
Systematic Reviews
Haleh Ashraf, Parham Ghafouri, Sina Kazemian, Abbas Soleimani, Azadeh Sadat Naseri, Shahrokh Karbalai, Ali Kazemi Saeid 
World J Meta-Anal 9(6):557-567. Published online Dec 28, 2021. doi: 10.13105/wjma.v9.i6.557
Meta-Analysis
Shuai-Shuai Gao, Guo-Xun Zhang, Wen-Ting Zhang 
World J Meta-Anal 9(6):568-584. Published online Dec 28, 2021. doi: 10.13105/wjma.v9.i6.568
Kai Zhao, Yu Guo, Ming-Fei Yang, Qiang Zhang 
World J Meta-Anal 9(6):585-597. Published online Dec 28, 2021. doi: 10.13105/wjma.v9.i6.585
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