Low-abundance drug-resistant viral variants in chronically HIV-infected, antiretroviral treatment-naive patients significantly impact treatment outcomes. - Simen BB; Simons JF; Hullsiek KH; Novak RM; Macarthur RD; Baxter JD; Huang C; Lubeski C; Turenchalk GS; Braverman MS; Desany B; Rothberg JM; et al. (The Journal of infectious diseases, 2009)