title: Response to Waters et al. 'Successful use of genotypic resistance testing in HIV-1-infected individuals with detectable viraemia between 50 and 1000 copies/ml'.
authors.forename: Tristan J
authors.initials: TJ
authors.lastname: Barber
mesh_terms: D024882:Drug Resistance, Viral / Q000235:genetics*; D005838:Genotype; D015658:HIV Infections / Q000821:virology*; D015497:HIV-1 / Q000235:genetics*; D006801:Humans; D014766:Viremia / Q000821:virology