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Authors
Gil-Gouveia, Raquel https://orcid.org/0000-0002-4256-4256
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Article History
Received: 19 January 2022
Accepted: 25 January 2022
First Online: 22 February 2022
Declarations
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: In this commentary the author refers to an instrument (headache gauge) that was previously published by the author and collaborators. However, the use of this instrument is free of charge, it has not been patented and neither the author nor his collaborators have any commercial interest in its use. The author declares that he has no additional conflicting interests.
