CD4 count most cost-effective.
D019380:Anti-HIV Agents / Q000627:therapeutic use*; D018791:CD4 Lymphocyte Count / Q000191:economics* / Q000706:statistics & numerical data*; D003198:Computer Simulation; D003362:Cost-Benefit Analysis; D015658:HIV Infections / Q000188:drug therapy*; D006801:Humans; D008954:Models, Biological
D019380:Anti-HIV Agents