<qa>  What was the name of the study that was designed to evaluate and compare the safety and tolerThis study was designed to evaluate and compare the safety and tolerability of tenofovir disoproxil fumarate TDF, emtricitabine FTCTDF, and entecavir ETV in the treatment of hepatitis B patients with decompensated liver disease. Safety was assessed by evaluating adverse events AEs and laboratory abnormalities. Efficacy was assessed by evaluating reductions in Child-Pugh-Turcotte CPT and Model for End Stage Liver Disease MELD scores, reductions in hepatitis B virus HBV deoxyribonucleic acid DNA, changes in liver enzymes, development of drug-resistant mutations, and generation of antibody to virus. 