The objective of this study was to assess the efficacy and safety of adefovir dipivoxil / adv ( hepsera ) therapy under compassionate use in patients with chronic hepatitis b ( chb ) and lamivudine resistance 本文的目的就是研究阿德福伟在对拉米夫定耐药的慢性乙肝患者当中使用的安全性和有效性。