1. From the Surgical Research Laboratory, Harvard Medical School and the Department of Surgery, Brigham and Women’s Hospital (M.J.W., J.P., M.K., N.L.T.); the Department of Medicine, Renal Division, Brigham and Women’s Hospital (F.B., M.T.); and Millenium Inc, Cambridge, Mass, and Department of Pathology, Harvard Medical School (W.W.H.), Boston, Mass. Dr Wilhelm is now at the Department of Cardiothoracic Surgery, University of Muenster, Germany.