[1] Millennium Pharmaceut Inc, Cambridge, MA USA
[2] Humboldt Univ, Rudolf Virchow Clin, Dept Surg, Berlin, Germany
[3] Univ Munster, Dept Cardiothorac Surg, D-48129 Munster, Germany
[4] Harvard Univ, Sch Med, Brigham & Womens Hosp, Dept Surg, Boston, MA USA
[5] Harvard Univ, Sch Med, Brigham & Womens Hosp, Surg Res Lab, Boston, MA USA