1. Malignancies associated with immunosuppressive or cytotoxic therapy;Penn;Surgery,1978
2. Risk of cancer in renal transplant recipients;Hoover;Lancet,1973
3. Immunodeficiency and the pathogenesis of lymphoma and leukemia;Louie;Sem Hematol,1978
4. Malignant lymphomas in organ transplant recipients;Penn,1981
5. Immunodeficiencv and the pathogenesis of non-Hodgkin's lymphoma;Louie;Semin Oncol,1980