Lance Armstrong

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In this July 24, 2005 file photo, Lance Armstrong, of Austin, Texas, center, waves from the podium as his son Luke, rear right of Armstrong, his twin daughters Grace, center right, and Isabelle, center left, look on, after winning his seventh straight Tour de France cycling race, during ceremonies on the Champs-Elysees avenue in Paris, after the 21st and final stage of the race between Corbeil-Essonnes, south of Paris, and the French capital. For Armstrong, who famously insisted he was the world's most-tested athlete during his glory years but who has never tested positive for cheating, the welcome back to a still largely-suspicous France may not be warm. The Arc de Triomphe monument is seen behind. (AP Photo/Bernard Papon/Pool, file)

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This July 1, 1999 file photo shows American cyclists Jonathan Vaughters, left, and Lance Armstrong sharing a light moment during medical checks for the Tour de France cycling race at Le Puy du Fou, western France. Vaughters testified that he saw Armstrong inject himself in the stomach in 1998 and that, "from that point on, while I was on the U.S. Postal Service team, Lance was open with me about his use of EPO." (AP Photo/Michel Spingler, File)

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Lance Armstrong is pictured after crashing during the fifth stage of the Tour of California cycling race in the outskirts of Visalia, Calif., on Thursday, May 20, 2010. (AP Photo/Marcio Jose Sanchez)

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Lance Armstrong (center) of the United States, with his race pants ripped after a crash, rides in the pack during the second stage of the Tour de France cycling race over 125 miles, with a start in Brussels and finish in Spa, Belgium, on Monday July 5, 2010. (AP Photo/Christophe Ena)

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Lance Armstrong dons controversial "28" kit before the Tour de France segment on Sunday, July 25, 2010. (Team RadioShack/Graham Watson).

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Cyclist Lance Armstrong greets fellow riders before the start of his Livestrong Challenge 10K ride for cancer in Blue Bell, Pa., on Aug. 22, 2010. (AP Photo/Bradley C. Bower)

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Lance Armstrong of the United States leads the breakaway group of cyclists as they climb toward Tourmalet Pass during the 16th stage of the Tour de France cycling race over 124 miles, with a start in Bagneres-de-Luchon and finish in Pau in the Pyrenees region of France, on Tuesday, July 20, 2010. (AP Photo/Bas Czerwinski)

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Seven-time Tour de France champion Lance Armstrong looks back on the podium after the 20th and last stage of the Tour de France cycling race in Paris on July 25, 2010. (AP Photo/Bas Czerwinski)

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US cyclist Levi Leipheimer jokes prior to the start of the Tour de France cycling race in France, July 15, 2004. Eleven teammates of Lance Armstrong on the U.S. Postal Service Cycling Team including Leipheimer have turned on him offering evidence and testimony to back up allegations that Armstrong used performance-enhancing drugs in competition, the USADA said. The U.S. Anti-Doping Agency released a damning report last week containing testimony from former teammates and other witnesses against Armstrong, and has ordered that he be stripped of his seven Tour de France titles. The international cycling federation is yet to indicate its next move. (AP Photo/Peter Dejong)

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FILE - This March 21, 2009 file photo shows Lance Armstrong, of the United States, beside fellow countryman George Hincapie, left, during the Milan-San Remo cycling classic in San Remo, Italy. The U.S. Anti-Doping Agency says 11 of Lance Armstrong's former teammates testified against him in its investigation of the cyclist, revealing "the most sophisticated, professionalized and successful doping program that sport has ever seen." (AP Photo/Alessandro Trovati)

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**FILE** Seven-time Tour de France champion Lance Armstrong grimaces during a news conference after the Memorial Hermann Ironman 70.3 Texas triathlon in Galveston, Texas, on April 1, 2012. (Associated Press/Houston Chronicle)

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**FILE** Lance Armstrong carries the United States flag during a victory parade on the Champs Elysees avenue in Paris on July 24, 2005, after winning his seventh straight Tour de France cycling race. (Associated Press)