Collins SP / 2006 / The effect of treatment on the presence of abnormal heart sounds in emergency department patients with heart failure / Am J Emerg Med 24:25~32 Kazanegra R / 2001 / A rapid test for B-type natriuretic peptide correlates with falling wedge pressures in patients treated for decompensated heart failure: a pilot study / J Card Fail 7:21~29 Collins SP / 2006 / Prevalence of negative chest radiography results in the emergency department patient with decompensated heart failure / Ann Emerg Med 47:13~18 Studler U / 2008 / Accuracy of chest radiographs in the emergency diagnosis of heart failure / Eur Radiol 18:1644~1652 Kataoka H / 2000 / The role of thoracic ultrasonography for evaluation of patients with decompensated chronic heart failure / J Am Coll Cardiol 35:1638~1646