title: Guidelines shed light on identifying failed regimens.
mesh_terms: D018791:CD4 Lymphocyte Count; D004352:Drug Resistance, Microbial; D004358:Drug Therapy / Q000191:economics; D004359:Drug Therapy, Combination; D015658:HIV Infections / Q000188:drug therapy* / Q000191:economics; D006801:Humans; D017410:Practice Guidelines as Topic; D012367:RNA, Viral / Q000032:analysis; D013997:Time Factors; D017211:Treatment Failure; D014481:United States; D019562:Viral Load
chemical_list: D012367:RNA, Viral