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To the Editor
We read with interest the article by Huang et al 1 entitled ‘Renin-angiotensin-aldosterone blockade reduces atrial fibrillation in hypertrophic cardiomyopathy’.
The major influence of an activated renin-angiotensin system is recognised in patients with atrial fibrillation (AF),2 but it is important to highlight that the observational nature of the present study does not allow for the causal conclusion alluded to in the title.
Several other …
Contributors JR: conceptualisation, writing. TSR: writing. MBY: writing, reviewing. LMB: writing, reviewing.
Competing interests None declared.
Patient consent Not required.
Provenance and peer review Not commissioned; internally peer reviewed.
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