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. 2021 Nov 11;22(1):136. doi: 10.1186/s10194-021-01350-3

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© The Author(s) 2021, corrected publication 2023

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Fig. 2 — Percentage of the participants responding good (green), medium (yellow), or poor (red) to the question “How do you rate your own knowledge of migraine, tension-type headache, cluster headache/trigeminal autonomic cephalalgias, and medication-overuse headache?”