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. 2021 Jan 22;44(5):2857–2878. doi: 10.1007/s10143-020-01470-5

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© The Author(s) 2021, corrected publication 2021

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Fig. 1 — Diagram showing selection process based on Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) for the studies related to endoscopic transorbital approaches