Spanish doctors try switching therapy from month to month.
D019380:Anti-HIV Agents / Q000008:administration & dosage*; D023241:Antiretroviral Therapy, Highly Active; D018791:CD4 Lymphocyte Count; D015658:HIV Infections / Q000188:drug therapy*; D006801:Humans; D013030:Spain; D019562:Viral Load
D019380:Anti-HIV Agents