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Contributors AMM wrote the review. TJF wrote the multiple choice questions. KGO revised manuscript drafts with AMM and contributed to the writing. All authors have seen the final version of the manuscript and have contributed to the final version.
Funding AMM (FS/16/74/32573) is supported by a British Heart Foundation clinical research training fellowship. TJF is supported by grants from the British Heart Foundation (PG-17- 25-32884).
Competing interests None declared.
Provenance and peer review Commissioned; externally peer reviewed.
Patient consent for publication Not required.
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