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. 2024 Aug 19;25(1):134. doi: 10.1186/s10194-024-01834-y

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© The Author(s) 2024

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Fig. 1 — Analysis population. CaMEO-I, Chronic Migraine Epidemiology and Outcomes International; CM, chronic migraine; EM, episodic migraine; MIDAS, Migraine Disability Assessment; UK, United Kingdom; US, United States