4Hirala M,Akbar SM,Horuke N,et al. Noninvasive diagnosis of the de- gree of hepatic fibrosis using uhrasonography in patients with chronic liver disease due to hepatitis C virus [J]. Eur J Clin Invest,2001,31 (6) :528-535.
5Alatrakch N,Koziel MJ. Antiviral fcell responses and therapy inchronic hepatitis B [J]. Hepatol, 2003,39 : 631-634.