Footnotes

• Twitter @DrSamStraw

• Contributors Both authors have contributed equally to the manuscript, and both have reviewed the contents prior to submission.

• 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 SS declares speaker’s fees and honoraria from Astra Zeneca. KKW declares speaker’s fees and honoraria from Medtronic, Abbott, Cardiac Dimensions, Novartis, Bayer and an unrestricted research grant from Medtronic.

• Provenance and peer review Commissioned; internally peer reviewed.