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. 2021 Mar 9;12:644804. doi: 10.3389/fneur.2021.644804

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Copyright © 2021 Maragkos, Schüpper, Lakomkin, Sideras, Price, Baron, Hamilton, Haider, Lee, Hadjipanayis and Robin.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Kaplan-Meier curve for survival after surgical excision on the present cohort. The x axis represents time from surgical excision in days, with red vertical dashed lines at the 3-, 6-, 9-, 12-, and 15-month marks. The y axis represents the percentage of patients surviving at each time point. Drop points in the curve represent patient mortality and the short vertical lines represent subject concealment from further calculations due to end of follow-up, with patients either lost to follow-up or being operated on recently from the time of analysis.