Nike, Trek, Radio Shack, Bud drop Armstrong
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Credit: AFP/Getty Images
Global cancer advocate Lance Armstrong, chairman and founder at LIVESTRONG, speaks about "Survivorship: changing the way the world fights cancer", during the World Cancer Congress on August 29, 2012 in Montreal, Quebec, Canada. Held every two years, the Congress represents a unique and ideal platform for the international cancer control community to meet, discuss, share, learn and connect in order to find solutions to reduce the impact of cancer on communities around the world. AFP PHOTO / ROGERIO BARBOSA (Photo credit should read ROGERIO BARBOSA/AFP/GettyImages)
