Article History
Received: 6 November 2017
Accepted: 4 January 2018
First Online: 16 January 2018
Ethics approval and consent to participate
: This study was a performed as a service evaluation of the Specialist Headache Centre at Great Ormond Street Hospital for Children and required no Research Ethics Committee approval (ExternalRef removed).
: NA
: The authors declare that they have no competing interests for this work.
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