- LETTER TO THE EDITOR
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Letter to the editor
The Journal of Headache and Pain volume 4, pages 171–172 (2003)
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Letter to the editor. J Headache Pain 4, 171–172 (2003). https://doi.org/10.1007/s10194-003-0057-2
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DOI: https://doi.org/10.1007/s10194-003-0057-2