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Open-Access Journal
Minireviews
Ying Song, Yuan Feng, Li-Hui Sun, Bo-Jiang Zhang, Hong-Juan Yao, Jing-Gui Qiao, Shu-Fen Zhang, Ping Zhang, Bin Liu 
World J Clin Cases 9(3):521-527. Published online Jan 26, 2021. doi: 10.12998/wjcc.v9.i3.521
Retrospective Study
Stefan Chiriac, Carol Stanciu, Camelia Cojocariu, Ana-Maria Singeap, Catalin Sfarti, Tudor Cuciureanu, Irina Girleanu, Razvan Alexandru Igna, Anca Trifan 
World J Clin Cases 9(3):552-564. Published online Jan 26, 2021. doi: 10.12998/wjcc.v9.i3.552
Observational Study
Sreenivasarao Ghali, Girish Katti, Syed Shahbaz, Parita K Chitroda, Anukriti V, Darshan Devang Divakar, Aftab Ahmed Khan, Sachin Naik, Abdulaziz A Al-Kheraif, Chitra Jhugroo 
World J Clin Cases 9(3):573-580. Published online Jan 26, 2021. doi: 10.12998/wjcc.v9.i3.573
Systematic Reviews
Case Report