Lance Armstrong introduced himself as a seven-time Tour de France champion at a cancer conference on Wednesday. "My name is Lance Armstrong. I am a cancer survivor," he said to open his speech to the World Cancer Congress. "I'm a father of five. And yes, I won the Tour de France seven times." Armstrong announced last week he would no longer challenge the U.S. Anti-Doping Agency's drug charges against him. USADA threw out his competitive victories dating to 1998, which would include all seven Tour wins.