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. 2020 Mar 2;12(e6):e882–e892. doi: 10.1136/bmjspcare-2019-002024

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© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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Forest plot of comparison between acupuncture and sham acupuncture in mean headache intensity at the end of 3-month treatment.