2Okamoto H, Nishizawa T, Kato N, et al. Molecular cloning and characterization of a novel DNA virus (TTV) associated with posttransfusion hepatitis of unknown etiology. Hepatol res, 1998, 10:1 - 16.
3Mushahwar IK, Erker JC, Muerhoff AS, et al. Molecular and biophysical characterization of TT virus:evidence for a new virus family infecting humans. Proc Natl Acad Sci USA, 1999, 96: 3177- 3132.
4Nishizawa T, Okamoto H, Tsuda F, et al. Quasispecies of TT virus (TTV) with sequence divergence in hypervariable regions of the capsid protein inchronic TTV infection. Jvirol, 1999, 73: 9604- 9608.
5Muljono DH, Nishizawa T, Tsuda F, et al. Molecular epidemiology of TT virus(TTV) and characterization of two novel genotypes in Indonesia.Arch Virol, 2001,146:1249- 1266.
6Leary TP, Erker JC, Chalmers ML, et al. Improved detection systems for TT virus in geographically dispersed human populations. J Gen Virol,1999,80:1751 - 1758.
7Peng Y, Nishizawa T, Takahashi M, et al. Analysis of the entire gencmes ofthe thirteen TT virus variants classifiable into fourth and fifth genetic groups, isolated from viremic infants. Arch Virol, 2002,147:21.
8Dayidson F, MacDonald D, Mokili JLK, et al. Early acquisition of TT virus (TTV) in an area endenfic for TTV infection. J Inffect Dis, 1999,179:1070 - 1076.
9Okamto H, Akahane Y, Ukita M, et d. Fecal excretion of a onenveloped DNA virus (TFV) associated with pusttransfusion non- A - G hepatitis. J Med Virol, 1998,56:128.
10Naoumov NV, Pertova EP,Thomas MG, et al. Presence of a newly described human DNA virus(qqN) in patients with liver disease. Lancet,1998,352(9123) : 195.
