Assessment of left ventricular preload by cardiac magnetic resonance imaging predicts exercise capacity in adult operated tetralogy of Fallot: a retrospective study.

BMC Cardiovasc Disord · 2014 · PMC4177590 · PMID 25245139

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may be significantno p-value reported

The retrospective nature of our study also did not allow us to collect data on exercise habits and behavior which may be significant in this group of young patients and could better help explain our findings.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.