Sihvo Eero I T, Sioris Thanos, Tynninen Olli, Salo Jarmo A
Division of General Thoracic and Esophageal Surgery, Department of Cardiothoracic Surgery, Helsinki University Central Hospital, Helsinki, Finland.
J Thorac Cardiovasc Surg. 2006 Jun;131(6):1415-6. doi: 10.1016/j.jtcvs.2006.02.004.