8Ramos E, Drachenberg CB, Papadimitriou JC, et al. Clinical course of polyoma virus nephropathy in 67 renal transplant patients[J ]. J Am Soc Nephro,2002,13:2145 - 2151.
9Mengel M, Marwedel M, Radermacher J, et al. Incidence of polyomavirus- nephropathy in renal allografts: influence of modem immuneosup- presive drugs[J ]. Nephrol Dial Transplant, 2003,18 : 1190 - 1196.