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Contributors JBTH conceived the idea. Data collection was completed by JBTH. Analysis was by JBTH and AHD with TJH oversight. The article was written by JBTH with AHD and TJH oversight and input. All approved the final version for publication.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests TJH is the creator of Tourni-key, but all proceeds go to charity. JBTH and AHD are both ambassadors for citizenAID which is the charity promoting the device and TJH is a founder of the same.
Patient consent for publication Not required.
Provenance and peer review Not commissioned; internally peer reviewed.
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