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Open-Access Journal
Review
Xia Li, Wei-Yi Xia, Fang Jiang, Dan-Yong Liu, Shao-Qing Lei, Zheng-Yuan Xia, Qing-Ping Wu 
World J Clin Cases 9(7):1499-1512. Published online Mar 6, 2021. doi: 10.12998/wjcc.v9.i7.1499
Minireviews
Case Control Study
Retrospective Study
Observational Study
Case Report
Hong-Yu Chen, Shou-Bin Ning, Xin Yin, Bai-Rong Li, Jing Zhang, Xiao-Wei Jin, Tao Sun, Zhi-Bo Xia, Xiao-Peng Zhang 
World J Clin Cases 9(7):1631-1638. Published online Mar 6, 2021. doi: 10.12998/wjcc.v9.i7.1631
Mohammad Abudalou, Eduardo A Vega, Rohit Dhingra, Erik Holzwanger, Sandeep Krishnan, Svetlana Kondratiev, Ali Niakosari, Claudius Conrad, Christopher G Stallwood 
World J Clin Cases 9(7):1682-1695. Published online Mar 6, 2021. doi: 10.12998/wjcc.v9.i7.1682
Alexandru Chirca, Lucian Negreanu, Andreea Iliesiu, Radu Costea 
World J Clin Cases 9(7):1728-1733. Published online Mar 6, 2021. doi: 10.12998/wjcc.v9.i7.1728