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At the US Open of Surfing, teams of young women hired by the Oral Cancer Foundation for three days handed out creatively worded stickers, T-shirts, and even temporary tattoos, all bearing a special QR code to the crowd. When beach-goers scanned the code with their smart phones, they were taken to a specially designed web page informing them that oral cancer can be caused by the sexually-transmitted human papilloma virus, the risk factors for it, and what they could do to avoid the cancer it can cause.