 The study was extended and continued to evaluate the efficacy and safety of the two regimens up to a total treatment duration of 96 weeks. The regimen of EFVFTCTDF continued to be dosed as the component drugs EFV FTC TDF, once daily, without regard to meals. The regimen of CBVEFV was dosed as 2 pills CBV, twice daily in the morning without regard to meals EFV once daily, without regard to meals. 