Castiglioni Alessandro, Verzini Alessandro, Macchi Andrea, Alfieri Ottavio
Department of Cardiac Surgery, S. Raffaele University Hospital, Via Olgettina 60, Milan, Italy.
Eur J Cardiothorac Surg. 2004 Apr;25(4):646-7. doi: 10.1016/j.ejcts.2003.12.040.