Pleural effusions following cardiac surgery: prevalence, risk factors, and clinical features. - Labidi M; Baillot R; Dionne B; Lacasse Y; Maltais F; Boulet LP; Labidi, Moujahed; Baillot, Richard; Dionne, Brigitte; Lacasse, Yves; Maltais, François; Boulet, Louis-Philippe (CHEST, 2009)