%0 Journal Article %A %T The Prognostic Value of Pathological Extranodal Extension and Staging Change According to the 8th Edition Pathologic Staging Modifications for Head and Neck Cancer %D 2021 %F %P 486-490 %V 5 %N 4 %R doi:10.14744/ejmi.2021.96176 %U https://dx.doi.org/10.14744/ejmi.2021.96176