Items where Author is "Ballard, Ron"

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HIV infection among youth in a South African mining town is associated with herpes simplex virus-2 seropositivity and sexual behaviour. Auvert, Bertran; Ballard, Ron; Campbell, Catherine; Carael, Michel; Carton, Matthieu; Fehler, Glenda; Gouws, Eleanor; MacPhail, Catherine; Taljaard, Dirk; Van Dam, Johannes; Williams, Brian