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First Online: 18 August 2020

Compliance with Ethical Standards

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: The authors declare there are no financial or non-financial conflicts of interests. The collection and storage of data followed the correct data protection methods. Patient data was anonymised. Information which could identify a patient (i.e. the hospital chart number) is kept in a password protected hospital computer. Ethical approval is not required as this audit did not involve anything being done to patients beyond their normal clinical management.

: Ethical approval is not required as this audit did not involve anything being done to patients beyond their normal clinical management.