<qa>  What is the name of the drug that is currently approved by the US, European and Asian HealthThis study is being conducted to compare the safety and effectiveness of the investigational medication, LdT Telbivudine with Lamivudine, a drug currently approved by the US, European and Asian Health Authorities for the treatment of hepatitis B infection. The results for patients taking LdT will be compared to results for patients taking Lamivudine. 