Suboptimal entravirine activity is common during failure of nevirapine based combination antiretroviral therapy in a cohort infected with non-B subtype HIV-1

Subjects: “…non-B subtype…”

Tenofovir based regimens associated with less drug resistance in hiv-1 infected nigerians failing first-line antiretroviral therapy.

Subjects: “…Non-B subtype…”