Palmerini Elisabetta, Federici Duccio, Ballo Piercarlo, Mondillo Sergio, Chiavarelli Mario
Department of Cardiovascular Diseases, University of Siena, Siena, Italy.
J Card Surg. 2011 May;26(3):292-3. doi: 10.1111/j.1540-8191.2010.01140.x. Epub 2010 Oct 11.