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Contributors FOM, UC, S-CY: substantial contributions to the conception or design of the work. FOM, UC, S-CY: drafting the work or revising it critically for important intellectual content. FOM, UC, S-CY: final approval of the version published. FOM, UC, S-CY: agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
Competing interests UC: proctoring for Abbott, lecturer for Medtronic.
Patient consent for publication Not required.
Provenance and peer review Not commissioned; internally peer reviewed.
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