Lapenna Elisabetta, Torracca Lucia, De Bonis Michele, Alfieri Ottavio
Department of Cardiac Surgery, San Raffaele University Hospital, Via Olgettina 60, 20132 Milan, Italy.
Eur J Cardiothorac Surg. 2007 Mar;31(3):546. doi: 10.1016/j.ejcts.2006.12.020. Epub 2007 Jan 30.