Boriani Giuseppe, Biffi Mauro, Martignani Cristian
Institute of Cardiology, University of Bologna, S. Orsola-Malpighi University Hospital, Bologna, Italy.
J Cardiothorac Vasc Anesth. 2008 Jun;22(3):423-5. doi: 10.1053/j.jvca.2007.12.008. Epub 2008 Mar 14.