3[3]Lai C L,Ching C K,Tung A K M,et al.Lamivudine is effective in suppressing heaptitis B virus B virus DNA in Chinese hepatitis B surface antigen carriers:A placebo-con-trolled trial[J].Hepatology,1997,25(2):241-244.
4[4]Lai C L,Chien R N,Leung N W Y,et al.One-year trial of lamivudine for chronic hepatitis B[J].N Eng J Med,1998,339(1):61-68.