%0 Journal Article %T Second-line antiretroviral therapy in resource-limited settings: what we know and the challenges of ever-changing antiretroviral therapy %A Ningappa, Diganth %A Collier, Ann C. %J Annals of Infection %D 2018 %B 2018 %9 %! Second-line antiretroviral therapy in resource-limited settings: what we know and the challenges of ever-changing antiretroviral therapy %K %X Almost 22 million persons with human immunodeficiency virus (HIV) are receiving antiretroviral therapy (ART) with the majority living in resource-limited settings (RLS) (1). This remarkable achievement owes much of its success to the public health approach adopted by the World Health Organization (WHO) (2). %U https://aoi.amegroups.org/article/view/4607 %V 2 %P %@ 2616-2709