4[8]Saito I.Hepatitis C Viras infection is associated with the devlopment of hepatoaualar.carcinome.Proc Natl A Cal Sci USA,1990,87:6547.
5[9]Editorials. Hepatitis C vious up standing Lancet,1990,335:1431.
6[11]Tsarcv SA. Variution in Course of hepatitis E inexperimentally infection cynomolus monkeys.Jmfect Dis,1993,167(6):1302.
7[12]Schlander GG.Viracnica in Egyption children hepatitis E virus infection. Lancet,1993,341(884):378.
8[1]Dougias DD,Taswell HF,Rakela J,et al.Absence of hepatitis B virus DNA detected by pdymerase chain reaction in blood donors who are hepatitis B surface antigtn negative and antibody to hepatitis B core antigen positive from a united states population with a low prevaue of hepatitis B srologic markers.Transfusion,1993,33:212.
