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Copyright ©The Author(s) 2021.
World J Clin Cases. Apr 26, 2021; 9(12): 2703-2710
Published online Apr 26, 2021. doi: 10.12998/wjcc.v9.i12.2703
Figure 3
Figure 3 Flow diagram for study selection according to PRISMA 2009 guideline. COVID-19: Coronavirus disease 2019.