1Leung NW, Lai CL, Chang TT, et al. Extended lamivudine treatment in patients with chronic hepatitis B enhances hepatitis B e antigen seroconversion rates: results after three years of therapy. Hepatology, 2001, 33:1527-1532.
5Kobashi H, Fujioka S, Kawaguchi M, et al. Two cases of development of enteeavir resistance during entecavir treatment {or nucleoside naive chronic hepatitis B. Hepatol Int, 2009, 3: 403-410.
6Lok AS, McMahon BJ. Chronic hepatitis B. Hepatology, 2007, 45:507-539.