. Author manuscript; available in PMC: 2013 Nov 12.
Published in final edited form as: J Thorac Cardiovasc Surg. 2012 Jul 24;145(4):10.1016/j.jtcvs.2012.06.029. doi: 10.1016/j.jtcvs.2012.06.029
Copyright © 2012 by The American Association for Thoracic Surgery