title: Implications of HIV variability for transmission: scientific and policy issues. Expert Group of the Joint United Nations Programme on HIV/AIDS.
mesh_terms: D014644:Genetic Variation; D015658:HIV Infections / Q000453:epidemiology / Q000635:transmission* / Q000821:virology*; D015497:HIV-1 / Q000145:classification / Q000235:genetics* / Q000502:physiology; D006287:Health Planning Guidelines; D006291:Health Policy; D006801:Humans; D017720:Molecular Epidemiology; D014480:United Nations