Effects of spironolactone on left ventricular ejection fraction and volumes in patients with class I or II heart failure - Vizzardi, E; D’Aloia, A; Giubbini, R; Bordonali, T; Bugatti, S; Pezzali, N; Romeo, A; Dei Cas, A; Metra, M; Dei Cas, L (Am J Cardiol, 2010)