Drug advertising. AHF: Viagra ads encouraging nonmedical use could fuel HIV spread.
D000329:Advertising; D004345:Drug Industry; D015658:HIV Infections / Q000635:transmission*; D006801:Humans; D010879:Piperazines; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones
D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate