4Allen ML, Deslaurier M, Andrews C W, et al.Identification and characterization of mutations in hepatitis B virus resistant to lamivudine [J] . Hepatology, 1998, 27(6):1670.
5Chayama K, Suzuki Y, Kobayashi M, et al. E mergence and takeover of YWDD motif mutant hepatitis B virus during long-term lamivudine therapy and re-takeover by wild type after cessation of therapy[J].Hepatology,1998, 27(6): 1711.
6Melegari M, Scaglioni PP, Wand JR. Hepatitis B virus mutants associated with 3TC and famciclovir administration are replication defective [J] . Hepatology, 1998, 27(2):628.
7Dienstag JL, Perrillo RP, Schiff ER, et al. A preliminary trial of lamivudine for chronic hepatitis B infection[J] . N Engl J Med,1995, 333(25) :1657.
