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Open-Access Journal
Opinion Review
Man-Ling Deng, Yong-Jun Chen, Mei-Ling Yang, Yi-Wen Liu, Hui Chen, Xiao-Qing Tang, Xue-Feng Yang 
World J Clin Cases 9(15):3487-3497. Published online May 26, 2021. doi: 10.12998/wjcc.v9.i15.3487
Minireviews
Retrospective Cohort Study
Retrospective Study
Observational Study
Meta-Analysis
Case Report
Piotr Czubkowski, Richard J Thompson, Irena Jankowska, A S Knisely, Milton Finegold, Pamela Parsons, Joanna Cielecka-Kuszyk, Sandra Strautnieks, Joanna Pawłowska, Laura N Bull 
World J Clin Cases 9(15):3631-3636. Published online May 26, 2021. doi: 10.12998/wjcc.v9.i15.3631
Michiel Frederik Vande Kerckhove, Vincent Fiere, Thais Dutra Vieira, Sami Bahroun, Marc Szadkowski, Henri d'Astorg 
World J Clin Cases 9(15):3637-3643. Published online May 26, 2021. doi: 10.12998/wjcc.v9.i15.3637