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Yusuf S, Pfeffer MA, Swedberg K, Granger CB, Held P, McMurray JJV, et al. Effects of candesartan in patients with chronic heart failure and preserved left-ventricular ejection fraction: The CHARM-Preserved Trial. <i>Lancet<\/i> 2003; 362: 777\u2013781.","DOI":"10.1016\/S0140-6736(03)14285-7"},{"key":"2","doi-asserted-by":"crossref","unstructured":"2. Ahmed A, Rich MW, Fleg JL, Zile MR, Young JB, Kitzman DW, et al. Effects of digoxin on morbidity and mortality in diastolic heart failure: The ancillary digitalis investigation group trial. <i>Circulation<\/i> 2006; 114: 397\u2013403.","DOI":"10.1161\/CIRCULATIONAHA.106.628347"},{"key":"3","doi-asserted-by":"crossref","unstructured":"3. Cleland JG, Tendera M, Adamus J, Freemantle N, Polonski L, Taylor J, et al. The perindopril in elderly people with chronic heart failure (PEP-CHF) study. <i>Eur Heart J<\/i> 2006; 27: 2338\u20132345.","DOI":"10.1093\/eurheartj\/ehl250"},{"key":"4","doi-asserted-by":"crossref","unstructured":"4. van Veldhuisen DJ, Cohen-Solal A, Bohm M, Anker SD, Babalis D, Roughton M, et al. Beta-blockade with nebivolol in elderly heart failure patients with impaired and preserved left ventricular ejection fraction: Data From SENIORS (Study of Effects of Nebivolol Intervention on Outcomes and Rehospitalization in Seniors With Heart Failure). <i>J Am Coll Cardiol<\/i> 2009; 53: 2150\u20132158.","DOI":"10.1016\/j.jacc.2009.02.046"},{"key":"5","doi-asserted-by":"crossref","unstructured":"5. Yancy CW, Jessup M, Bozkurt B, Butler J, Casey DE Jr, Drazner MH, et al. 2013 ACCF\/AHA guideline for the management of heart failure: A report of the American College of Cardiology Foundation\/American Heart Association Task Force on Practice Guidelines. <i>J Am Coll Cardiol<\/i> 2013; 62: e147\u2013e239.","DOI":"10.1016\/j.jacc.2013.05.019"},{"key":"6","doi-asserted-by":"crossref","unstructured":"6. Ponikowski P, Voors AA, Anker SD, Bueno H, Cleland JG, Coats AJ, et al. 2016 ESC Guidelines for the diagnosis and treatment of acute and chronic heart failure: The Task Force for the diagnosis and treatment of acute and chronic heart failure of the European Society of Cardiology (ESC). Developed with the special contribution of the Heart Failure Association (HFA) of the ESC. <i>Eur Heart J<\/i> 2016; 37: 2129\u20132200.","DOI":"10.1093\/eurheartj\/ehw128"},{"key":"7","doi-asserted-by":"crossref","unstructured":"7. Lee SE, Cho HJ, Lee HY, Yang HM, Choi JO, Jeon ES, et al. A multicentre cohort study of acute heart failure syndromes in Korea: Rationale, design, and interim observations of the Korean Acute Heart Failure (KorAHF) registry. <i>Eur J Heart Fail<\/i> 2014; 16: 700\u2013708.","DOI":"10.1002\/ejhf.91"},{"key":"8","doi-asserted-by":"crossref","unstructured":"8. Lang RM, Badano LP, Mor-Avi V, Afilalo J, Armstrong A, Ernande L, et al. Recommendations for cardiac chamber quantification by echocardiography in adults: An update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging. <i>Eur Heart J Cardiovasc Imaging<\/i> 2015; 16: 233\u2013270.","DOI":"10.1093\/ehjci\/jev014"},{"key":"9","doi-asserted-by":"crossref","unstructured":"9. Kapoor JR, Kapoor R, Ju C, Heidenreich PA, Eapen ZJ, Hernandez AF, et al. Precipitating clinical factors, heart failure characterization, and outcomes in patients hospitalized with heart failure with reduced, borderline, and preserved ejection fraction. <i>JACC Heart Fail<\/i> 2016; 4: 464\u2013472.","DOI":"10.1016\/j.jchf.2016.02.017"},{"key":"10","doi-asserted-by":"crossref","unstructured":"10. Gomez-Otero I, Ferrero-Gregori A, Varela Roman A, Seijas Amigo J, Pascual-Figal DA, Delgado Jimenez J, et al. Mid-range ejection fraction does not permit risk stratification among patients hospitalized for heart failure. <i>Rev Esp Cardiol (Engl Ed)<\/i> 2017; 70: 338\u2013346.","DOI":"10.1016\/j.rec.2016.11.016"},{"key":"11","doi-asserted-by":"crossref","unstructured":"11. Farmakis D, Simitsis P, Bistola V, Triposkiadis F, Ikonomidis I, Katsanos S, et al. Acute heart failure with mid-range left ventricular ejection fraction: Clinical profile, in-hospital management, and short-term outcome. <i>Clin Res Cardiol<\/i> 2017; 106: 359\u2013368.","DOI":"10.1007\/s00392-016-1063-0"},{"key":"12","doi-asserted-by":"crossref","unstructured":"12. Lam CS, Teng TH. Understanding heart failure with mid-range ejection fraction. <i>JACC Heart Fail<\/i> 2016; 4: 473\u2013476.","DOI":"10.1016\/j.jchf.2016.03.025"},{"key":"13","doi-asserted-by":"crossref","unstructured":"13. Savarese G, Hage C, Orsini N, Dahlstrom U, Perrone-Filardi P, Rosano GM, et al. Reductions in N-terminal pro-brain natriuretic peptide levels are associated with lower mortality and heart failure hospitalization rates in patients with heart failure with mid-range and preserved ejection fraction. <i>Circ Heart Fail<\/i> 2016; 9: e003105.","DOI":"10.1161\/CIRCHEARTFAILURE.116.003105"},{"key":"14","doi-asserted-by":"crossref","unstructured":"14. Lund LH, Benson L, Dahlstrom U, Edner M. Association between use of renin-angiotensin system antagonists and mortality in patients with heart failure and preserved ejection fraction. <i>JAMA<\/i> 2012; 308: 2108\u20132117.","DOI":"10.1001\/jama.2012.14785"},{"key":"15","doi-asserted-by":"crossref","unstructured":"15. Solomon SD, Claggett B, Lewis EF, Desai A, Anand I, Sweitzer NK, et al. 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