1. From the Departments of Pathology and Surgery, Duke University and Durham Veterans Administration Medical Centers, Durham, N.C.; the Division of Biostatistics, Vanderbilt University, Nashville; the Department of Surgery, The Johns Hopkins and Francis Scott Key Hospital, Baltimore, Md.; the Department of Surgery, Washington Hospital Center, Washington, D.C.; the Transplantation and Immunology Laboratory, University of South Florida, Tampa, Fla.; and the South-Eastern Organ Procurement Foundation. Address...