3Ghisetti V, Barbui A, Franchello A,et aI.Quantition of cytomeg- alovirus DNA by polymerase chain as a predictor of disease in solid organ transplantation[J].J Med Virol,2004,73( 2 }:223-229.
7Gohring K, Dietz K, Hartleif S, et al. Influence of different extrac- tion methods and PCR techniques on the sensitivity of HCMV- DNA detection in dried blood spot (DBS) filter cards[J]. J Clin Vi- ral.2010.48:278-281.