Footnotes

• Twitter @JulianYeoh1

• Contributors PM conceived the idea and advised on manuscript format, then edited and revised the text and figures. JY wrote the manuscript and revised the text and figures.

• 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 PM is a procedural proctor for Edwards LifeSciences and has received Educational support from Edwards LifeSciences and research support from Boston Scientific.

• Patient consent for publication Not required.

• Provenance and peer review Commissioned; internally peer reviewed.

• Data availability statement All data relevant to the study are included in the article

• Author note References which include a * are considered to be key references.

• Supplemental material This content has been supplied by the author(s). It has not been vetted by BMJ Publishing Group Limited (BMJ) and may not have been peer-reviewed. Any opinions or recommendations discussed are solely those of the author(s) and are not endorsed by BMJ. BMJ disclaims all liability and responsibility arising from any reliance placed on the content. Where the content includes any translated material, BMJ does not warrant the accuracy and reliability of the translations (including but not limited to local regulations, clinical guidelines, terminology, drug names and drug dosages), and is not responsible for any error and/or omissions arising from translation and adaptation or otherwise.