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Contributors JG co-designed the project, collected and analysed the data, and co-wrote the submitted letter. JP co-designed the project and co-wrote the submitted letter. Both are listed as co-authors of this work.
Competing interests None.
Ethics approval As data were anonymous and investigators had a duty of care to the patients, ethical review was not requested.
Provenance and peer review Not commissioned; internally peer reviewed.
Data sharing statement All data contributing to this work are available, on request from the corresponding author.
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