1. Malignant lymphomas in transplant patients;Penn;Transplant Proc,1969
2. Cancers following cyclosporin therapy;Penn;Transplantation,1987
3. Cancer in renal allograft recipients in Australia and New Zealand;Sheil;Transplant Proc,1977
4. The changing pattern of posttransplant malignancies;Penn;Transplant Proc,1991
5. De novo malignancy emerges as a major cause of morbidity and late failure in renal transplantation;Sheil;Transplant Proc,1993