Newstein M, Losikoff P, Caliendo A, Ingersoll J, Kurpewski J, Hanley D, Cerezo J, Ramratnam B, Cu-Uvin S. Prevalence and persistence of nonnucleoside reverse transcriptase inhibitor mutations in the female genital tract. J Acquir Immune Defic Syndr. 2005 Mar 01; 38(3):364-6.