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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 2. — Percent change of the temporal summation threshold after NTG administration: comparison between MIG+ and MIG− patients. MIG+: patients who developed migraine-like attacks after NTG administration. MIG−: patients who did not develop migraine-like attacks after NTG administration. Panel A: MIG+ vs MIG− comparison in the LF-MIG group (low-frequency migraine). Panel B: MIG+ vs MIG− comparison in the HF-MIG group (moderate- to high-frequency migraine). ● MIG + vs MIG— P < 0.05.