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. 2021 Dec 16;11:24106. doi: 10.1038/s41598-021-03483-6

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© The Author(s) 2021

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(A) Forest plot of the operative time during parotidectomy (hours). (B) Forest plot of the tumor size (centimeters). MD mean difference, CI confidence interval, MBI Blair incision, MFI modified facelift incision.