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. 2019 Oct 15;161(2):429–438. doi: 10.1097/j.pain.0000000000001726

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Copyright © 2019 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the International Association for the Study of Pain.

This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

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Figure 3. — Percent change of VAS of temporal summation after NTG administration in the experimental groups. Panel A: VAS-I: visual analogue scale score recorded for the first stimulus of the temporal summation. Panel B: VAS-V: visual analogue scale score recorded for the fifth stimulus of the temporal summation. ▲ intragroup analysis: time point vs baseline P < 0.05. In table: ANOVA intergroup post hoc comparisons. ANOVA, analysis of variance; HC, healthy controls; HF-MIG, moderate- to high-frequency migraine group; LF-MIG, low-frequency migraine group.