Comparison of clinical features and outcomes of patients hospitalized with heart failure and normal ejection fraction (> or =55%) versus those with mildly reduced (40% to 55%) and moderately to severely reduced (<40%) fractions.
Am J Cardiol. 2008 Apr 15;101(8):1151-6. doi: 10.1016/j.amjcard.2007.12.014. Epub 2008 Feb 20.
Am J Cardiol. 2008.
PMID: 18394450
Free PMC article.